diff --git a/content/http..mathhub.info/MitM/Models/poisson/$Displacement$Law.omdoc b/content/http..mathhub.info/MitM/Models/poisson/$Displacement$Law.omdoc
index 1ff8b452d220290fb8b079ace9e014071f0b1a58..321919a705660585d67bc400a99c648b0b75b15b 100644
--- a/content/http..mathhub.info/MitM/Models/poisson/$Displacement$Law.omdoc
+++ b/content/http..mathhub.info/MitM/Models/poisson/$Displacement$Law.omdoc
@@ -1,6 +1,6 @@
 <omdoc xmlns="http://omdoc.org/ns" xmlns:om="http://www.openmath.org/OpenMath"><theory name="DisplacementLaw" base="http://mathhub.info/MitM/Models/poisson" meta="http://mathhub.info/MitM/Models?Base"><metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/mmt/poisson.mmt#1171.29.0:1469.38.1"/></metadata><import from="http://mathhub.info/MitM/Models/densities?ElectrostaticPotential"><metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/mmt/poisson.mmt#1209.30.1:1250.30.42"/></metadata></import><import from="http://mathhub.info/MitM/Models/poisson?PoissonParameters"><metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/mmt/poisson.mmt#1253.31.1:1280.31.28"/></metadata></import><import from="http://mathhub.info/MitM/Models/poisson?Displacement"><metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/mmt/poisson.mmt#1283.32.1:1305.32.23"/></metadata></import><opaque format="text"><metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/mmt/poisson.mmt#1310.34.1:1386.34.77"/></metadata>Expression for electric displacement denoted by <unparsed>None</unparsed> = <unparsed>None</unparsed> d/dx <unparsed>None</unparsed></opaque><constant name="electric_displacement">
        <metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/mmt/poisson.mmt#1390.36.1:1467.37.30"/></metadata>
-       <type><om:OMOBJ xmlns:om="http://www.openmath.org/OpenMath"><om:OMSF><om:text format="unparsed"><![CDATA[Ω → displacement_dim]]></om:text></om:OMSF></om:OMOBJ></type>
+       <type><om:OMOBJ xmlns:om="http://www.openmath.org/OpenMath"><om:OMSF><om:text format="unparsed"><![CDATA[Ω ⟶ displacement_dim]]></om:text></om:OMSF></om:OMOBJ></type>
        <definition><om:OMOBJ xmlns:om="http://www.openmath.org/OpenMath"><om:OMSF><om:text format="unparsed"><![CDATA[[x] -ε_s ⋅ (ψ ' x)]]></om:text></om:OMSF></om:OMOBJ></definition>
        <notations><notation dimension="1" precedence="0" fixity="mixfix" arguments="D"> <scope languages="" priority="0"/> </notation></notations>
      </constant></theory></omdoc>
\ No newline at end of file
diff --git a/content/http..mathhub.info/MitM/Models/thermistor/$Spatial$Reference$Electrical$Field.omdoc b/content/http..mathhub.info/MitM/Models/thermistor/$Spatial$Reference$Electrical$Field.omdoc
index 78cd8532cbf05803b1700d15acaac4b6854bba9a..5ad6858730657c0f80ded642a6af081892433b3a 100644
--- a/content/http..mathhub.info/MitM/Models/thermistor/$Spatial$Reference$Electrical$Field.omdoc
+++ b/content/http..mathhub.info/MitM/Models/thermistor/$Spatial$Reference$Electrical$Field.omdoc
@@ -1,6 +1,6 @@
 <omdoc xmlns="http://omdoc.org/ns" xmlns:om="http://www.openmath.org/OpenMath"><theory name="SpatialReferenceElectricalField" base="http://mathhub.info/MitM/Models/thermistor" meta="http://mathhub.info/MitM/Models?Base"><metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/thermistor/quantities.mmt#2155.71.0:2342.75.-1"/></metadata><import from="http://mathhub.info/MitM/Models/thermistor?DeviceGeometry"><metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/thermistor/quantities.mmt#2210.72.2:2234.72.26"/></metadata></import><import from="http://mathhub.info/MitM/Models/thermistor?ElectricalFieldStrength"><metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/thermistor/quantities.mmt#2238.73.2:2271.73.35"/></metadata></import><constant name="referebceelectricfield">
        <metadata><link rel="http://cds.omdoc.org/mmt?metadata?sourceRef" resource="http://mathhub.info/MitM/Models/thermistor/quantities.mmt#2275.74.2:2341.74.68"/></metadata>
-       <type><om:OMOBJ xmlns:om="http://www.openmath.org/OpenMath"><om:OMSF><om:text format="unparsed"><![CDATA[Ω → (electricfieldstrength_dim)]]></om:text></om:OMSF></om:OMOBJ></type>
+       <type><om:OMOBJ xmlns:om="http://www.openmath.org/OpenMath"><om:OMSF><om:text format="unparsed"><![CDATA[Ω ⟶ (electricfieldstrength_dim)]]></om:text></om:OMSF></om:OMOBJ></type>
        
        <notations><notation dimension="1" precedence="0" fixity="mixfix" arguments="Eref"> <scope languages="" priority="0"/> </notation></notations>
      </constant></theory></omdoc>
\ No newline at end of file
diff --git a/source/mmt/Quantities.mmt b/source/mmt/Quantities.mmt
index 77ac92d51a6d36a5c314354b748d70fc9e878a18..c04af89e3cbb9eee0920b2de4904e3aa76ba3c8d 100644
--- a/source/mmt/Quantities.mmt
+++ b/source/mmt/Quantities.mmt
@@ -1,70 +1,70 @@
-namespace http://mathhub.info/MitM/Models 
-import qe http://mathhub.info/MitM/Foundation/Units 
+namespace http://mathhub.info/MitM/Models ❚
+import qe http://mathhub.info/MitM/Foundation/Units ❚
 
-/T   This is a theory containing the electric displacement. 
+/T   This is a theory containing the electric displacement. ❚
 
 theory Displacement : qe:?SIUnits  =
-  // meta modeltype physical_quantity 
-	// displacement_dim : type  = QE (ElectricCharge /' (Length *' Length)) 
-	displacement : QE( ElectricDisplacement )  # D 
-
+  // meta modeltype physical_quantity ❙
+	// displacement_dim : type ❘ = QE (ElectricCharge /' (Length *' Length)) ❙
+	displacement : QE( ElectricDisplacement ) ❘ # D ❙
+❚
 	
 theory Permittivity : qe:?SIUnits  =
-  // meta modeltype physical_quantity 
-	// permittivity_dim : type  = QE (ElectricCharge /' (ElectricPotential *' Length)) 
-	permittivity : QE( ElectricalPermittivity )  # εs 
-
+  // meta modeltype physical_quantity ❙
+	// permittivity_dim : type ❘ = QE (ElectricCharge /' (ElectricPotential *' Length)) ❙
+	permittivity : QE( ElectricalPermittivity ) ❘ # εs ❙
+❚
 	
 theory Density : qe:?SIUnits =
-  // meta modeltype physical_quantity 
-	// density_dim : dimension  = (DimNone /' (Length *' Length *' Length)) 
-	density : QE( VolumeDensity )  
-
+  // meta modeltype physical_quantity ❙
+	// density_dim : dimension ❘ = (DimNone /' (Length *' Length *' Length)) ❙
+	density : QE( VolumeDensity )  ❙
+❚
 	
 theory CurrentDensity : qe:?SIUnits =
-  // meta modeltype physical_quantity 
-	// currentdensity_dim : dimension  = (Current /' Area) 
-	currentdensity : QE ( CurrentDensity ) 
-
+  // meta modeltype physical_quantity ❙
+	// currentdensity_dim : dimension ❘ = (Current /' Area) ❙
+	currentdensity : QE ( CurrentDensity ) ❙
+❚
 	
 theory RecombinationRate : qe:?QEBase =
-	include Models/device?DeviceGeometry 
-  // meta modeltype physical_quantity 
-	// recombinationrate_dim : dimension  = DimNone /' (Volume *' Time) 
-	recombinationrate : Ω → QE RecombinationRate  # R 
-
+	include Models/device?DeviceGeometry ❙
+  // meta modeltype physical_quantity ❙
+	// recombinationrate_dim : dimension ❘ = DimNone /' (Volume *' Time) ❙
+	recombinationrate : Ω ⟶ QE RecombinationRate ❘ # R ❙
+❚
 	
 theory RecombinationCoefficient : top:?Base =
-	include ?Density 
-	recombination_coefficient : QE( VolumeDensity )→ QE( VolumeDensity ) → QE (Volume /' Time)  # r 1 2 
+	include ?Density ❙
+	recombination_coefficient : QE( VolumeDensity )⟶ QE( VolumeDensity ) ⟶ QE (Volume /' Time) ❘ # r 1 2 ❙
 	
-
+❚
 	
 theory Energy : qe:?QEBase =
-	energy : QE Energy 
-
+	energy : QE Energy ❙
+❚
 
 theory SpatialDensity : qe:?QEBase =
-	include Models/device?DeviceGeometry 
-	include ?Density 
-	spatialdensity : Ω → QE( VolumeDensity )  # n 1
-
+	include Models/device?DeviceGeometry ❙
+	include ?Density ❙
+	spatialdensity : Ω ⟶ QE( VolumeDensity ) ❘ # n 1❙
+❚
 	
 theory SpatialPotential : top:?Base =
-	include Models/device?DeviceGeometry 
+	include Models/device?DeviceGeometry ❙
   /T Spatial variation of the potential,
-	   usually denoted by $φ$. 
-	potential : Ω → QE ( ElectricPotential )  # φ 1	
-
+	   usually denoted by $φ$. ❙
+	potential : Ω ⟶ QE ( ElectricPotential ) ❘ # φ 1❙	
+❚
 	
 theory SpatialChargeDensity : top:?Base =
-	include Models/device?DeviceGeometry 
-	include ?Density 
-	charge : Ω → QE ( ElectricChargeDensity )  # Q 1 
-
+	include Models/device?DeviceGeometry ❙
+	include ?Density ❙
+	charge : Ω ⟶ QE ( ElectricChargeDensity ) ❘ # Q 1 ❙
+❚
 
 theory SpatialCurrentDensity : top:?Base =
-   include Models/device?DeviceGeometry 
-   include ?CurrentDensity 
-	spatialcurrentdensity : Ω → QE( CurrentDensity )  # j 1 
-
\ No newline at end of file
+   include Models/device?DeviceGeometry ❙
+   include ?CurrentDensity ❙
+	spatialcurrentdensity : Ω ⟶ QE( CurrentDensity ) ❘ # j 1 ❙
+❚
\ No newline at end of file
diff --git a/source/mmt/VanRoosbroeck.mmt b/source/mmt/VanRoosbroeck.mmt
index a583d83ac97bb7694672439c44a0df7f543f6525..272b43d80ff1cb6dfc14a1d5d47d2a285d48c5d5 100644
--- a/source/mmt/VanRoosbroeck.mmt
+++ b/source/mmt/VanRoosbroeck.mmt
@@ -1,5 +1,5 @@
-namespace http://mathhub.info/MitM/Models/VanRoosbroeck 
-import top http://mathhub.info/MitM/Models 
+namespace http://mathhub.info/MitM/Models/VanRoosbroeck ❚
+import top http://mathhub.info/MitM/Models ❚
 
 /T   This is a theory containing the stationary van Roosbroeck system 
      describung the charge transport of electrons and holes
@@ -11,13 +11,13 @@ import top http://mathhub.info/MitM/Models 
      density of states, mobilties are assumed to be
      homogenous (spatially constant). Also a homogenous device
      temperature is assumed.
-     
+     ❚
 theory VanRoosbroeck : top:?Base =
-	include poissonElectrostatics?PoissonEquation 
-	include poisson?PoissonBoundaryConditions 
-	include continuity?ContinuityEquationElectrons 
-	include continuity?ContinuityEquationHoles 
-	include continuity?ContinuityBoundaryConditionsElectrons 
-	include continuity?ContinuityBoundaryConditionsHoles 
-	include recombination?SpontaneousRecombination 
-
\ No newline at end of file
+	include poissonElectrostatics?PoissonEquation ❙
+	include poisson?PoissonBoundaryConditions ❙
+	include continuity?ContinuityEquationElectrons ❙
+	include continuity?ContinuityEquationHoles ❙
+	include continuity?ContinuityBoundaryConditionsElectrons ❙
+	include continuity?ContinuityBoundaryConditionsHoles ❙
+	include recombination?SpontaneousRecombination ❙
+❚
\ No newline at end of file
diff --git a/source/mmt/band.mmt b/source/mmt/band.mmt
index 2a40dde1690cc71c14872a4b418c69838d8aea26..05c0fd03f4e35900630bfc87ec9356006840ee1f 100644
--- a/source/mmt/band.mmt
+++ b/source/mmt/band.mmt
@@ -1,24 +1,24 @@
-namespace http://mathhub.info/MitM/Models 
+namespace http://mathhub.info/MitM/Models ❚
 
 /T   This is a theory containing the bandstructure parameters of 
-     the semiconductor. 
-/T   Parameter 
+     the semiconductor. ❚
+/T   Parameter ❚
 theory BandstructureParameters : top:?Base =	
 	structure effective_density : top:?Density =
-		density @ effective_density_of_states  # N 
-	
+		density @ effective_density_of_states ❘ # N ❙
+	❚
 	/T The effective density of states for the conduction bands 
-     usually denoted by $N$. 
-  /T The conduction band edge usually denoted by $E$. 
-	band_edge : QE Energy  # E 
-	/T Charge number (for electrons -1, for holes 1)  
-  	charge_number : ℤ  # z 
-	mobility : QE (Area /' (ElectricPotential *' Time))  # μ 
-
+     usually denoted by $N$. ❙
+  /T The conduction band edge usually denoted by $E$. ❙
+	band_edge : QE Energy ❘ # E ❙
+	/T Charge number (for electrons -1, for holes 1) ❙ 
+  	charge_number : ℤ ❘ # z ❙
+	mobility : QE (Area /' (ElectricPotential *' Time)) ❘ # μ ❙
+❚
   	
 theory Band : top:?Base =
-	include ?BandstructureParameters 
+	include ?BandstructureParameters ❙
 	structure fermi : top:?SpatialPotential =
-		potential # φ 1 
-	
-
\ No newline at end of file
+		potential # φ 1 ❙
+	❚
+❚
\ No newline at end of file
diff --git a/source/mmt/constants.mmt b/source/mmt/constants.mmt
index 7001b498cee349f9d789153d3f901ebb805bb9a0..162392412786e02a618aeff74338db32fac52ee8 100644
--- a/source/mmt/constants.mmt
+++ b/source/mmt/constants.mmt
@@ -1,31 +1,31 @@
-namespace http://mathhub.info/MitM/Models 
-import mitm http://mathhub.info/MitM 
-import lfx http://gl.mathhub.info/MMT/LFX 
+namespace http://mathhub.info/MitM/Models ❚
+import mitm http://mathhub.info/MitM ❚
+import lfx http://gl.mathhub.info/MMT/LFX ❚
 
-/T   This is a theory containing general physical constants 
+/T   This is a theory containing general physical constants ❚
 theory PhysicalConstants : mitm:/Foundation/Units?SIUnits =
-	include ?Permittivity 
-	include mitm:/smglom/arithmetics?realarith 
-	/T The vaccuum dielectric permitivity constant (usually denoted by $ε_0$) 
-	vacuum_dielectric_permitivity : permittivity_dim  # ε_0  
-	/T The elementary charge (denoted by $q$) 
-	elementary_charge : QE ElectricCharge  # q 
-   /T The Boltzmann constant (usually denoted by $k_B$) 
-	Boltzmann_constant : QE (Energy /' Temperature)  # k_B 
-
+	include ?Permittivity ❙
+	include mitm:/smglom/arithmetics?realarith ❙
+	/T The vaccuum dielectric permitivity constant (usually denoted by $ε_0$) ❙
+	vacuum_dielectric_permitivity : permittivity_dim ❘ # ε_0 ❙ 
+	/T The elementary charge (denoted by $q$) ❙
+	elementary_charge : QE ElectricCharge ❘ # q ❙
+   /T The Boltzmann constant (usually denoted by $k_B$) ❙
+	Boltzmann_constant : QE (Energy /' Temperature) ❘ # k_B ❙
+❚
 
 theory Base : mitm:/smglom/arithmetics?realarith =
-	include ?PhysicalConstants                                  
-	include http://mathhub.info/MitM/smglom/calculus?derivative 
-	// TODO anständige ableitung (Einheiten!!)                              
-	unit_pred : {D : dimension, P : ℝ → bool} type 
-		= [D,P] ⟨ QE D | [x] ⊦ P (scalar x) ⟩  # dpred 1 2 
-	inof : {D : dimension, u : unit D, P : ℝ → bool, r : pred P}dpred D P  # 4 inof 2  // TODO 
-	scalarp : {D : dimension, P : ℝ → bool} dpred D P → pred P  # scalarp 3 
+	include ?PhysicalConstants ❙                                 
+	include http://mathhub.info/MitM/smglom/calculus?derivative ❙
+	// TODO anständige ableitung (Einheiten!!) ❙                             
+	unit_pred : {D : dimension, P : ℝ ⟶ bool} type ❘
+		= [D,P] ⟨ QE D | [x] ⊦ P (scalar x) ⟩ ❘ # dpred 1 2 ❙
+	inof : {D : dimension, u : unit D, P : ℝ ⟶ bool, r : pred P}dpred D P ❘ # 4 inof 2 ❙ // TODO ❙
+	scalarp : {D : dimension, P : ℝ ⟶ bool} dpred D P ⟶ pred P ❘ # scalarp 3 ❙
 	
-	// TODO 
-	// unit_derivative : {P : ℝ → bool, Da : dimension, Db : dimension, u : unit Da, f : (dpred Da P) → QE Db, p : ⊦ diff [x : pred P] scalar (f (x inof u))} dpred Da P → QE Db 
-		= [P,Da,Db,u,f,p] ([y] ([x : pred P] (scalar (f (x inof u)))' (scalarp y)) of (unitof y) ) 
+	// TODO ❙
+	// unit_derivative : {P : ℝ ⟶ bool, Da : dimension, Db : dimension, u : unit Da, f : (dpred Da P) ⟶ QE Db, p : ⊦ diff [x : pred P] scalar (f (x inof u))} dpred Da P ⟶ QE Db ❘
+		= [P,Da,Db,u,f,p] ([y] ([x : pred P] (scalar (f (x inof u)))' (scalarp y)) of (unitof y) ) ❙
 	
-	// Ω = kompakte, einfach zusammenhängende teilmenge des ℝ^n  für n ‍∈ 4 
-
+	// Ω = kompakte, einfach zusammenhängende teilmenge des ℝ^n  für n ‍∈ 4 ❙
+❚
diff --git a/source/mmt/continuity.mmt b/source/mmt/continuity.mmt
index 6ae3c84b92b67e2a61a3d9e0825f9b2b795f0053..c77c77a50f400a67dbe758848c25641a4027e614 100644
--- a/source/mmt/continuity.mmt
+++ b/source/mmt/continuity.mmt
@@ -1,60 +1,60 @@
-namespace http://mathhub.info/MitM/Models/continuity 
-import top http://mathhub.info/MitM/Models 
+namespace http://mathhub.info/MitM/Models/continuity ❚
+import top http://mathhub.info/MitM/Models ❚
 
 /T   This is a theory containing the mobilitiy parameters of 
-     the semiconductor. 
+     the semiconductor. ❚
 
 theory Mobility : top:?Base =
-	/T The mobility parameter usually denoted by $μ$. 
-
+	/T The mobility parameter usually denoted by $μ$. ❙
+❚
 	
 
-/T   This is a theory containing the expression for the hole current. 
+/T   This is a theory containing the expression for the hole current. ❚
 
 theory CurrentLaw : top:?Base =
-	include top:?Band 
-	include top:?BandstructureParameters 
-	include top:?SpatialCurrentDensity 
+	include top:?Band ❙
+	include top:?BandstructureParameters ❙
+	include top:?SpatialCurrentDensity ❙
 	
 
 	/T Defintion of the hole current in gradient form. 
      The driving force of the current are the negative gradient of 
-     the quasi-Fermi potential, here denoted by j_p. 
-    // TODO: change to more natural formulation later, e.g. f-> xψ, g-> xφ_p? 
+     the quasi-Fermi potential, here denoted by j_p. ❙
+    // TODO: change to more natural formulation later, e.g. f-> xψ, g-> xφ_p? ❙
      
-	current_law : {x : Ω} ⊦ j x ≐ -q ⋅ μ ⋅ (n x) ⋅ ((φ ') x) 
-
+	current_law : {x : Ω} ⊦ j x ≐ -q ⋅ μ ⋅ (n x) ⋅ ((φ ') x) ❙
+❚
 
-/T   This is a theory containing the continuity equation for the electrons. 
+/T   This is a theory containing the continuity equation for the electrons. ❚
 	
 theory ContinuityEquation : top:?Base =
-	include top:/Species?Species 
-	include top:?RecombinationRate 
+	include top:/Species?Species ❙
+	include top:?RecombinationRate ❙
 
-	/T Formulation of the continuity equation for electrons in divergence form. 
+	/T Formulation of the continuity equation for electrons in divergence form. ❙
      	
 	continuity_equation : 
-		{x : Ω} ⊦ (j ') x ≐ -z (R x) 
-
+		{x : Ω} ⊦ (j ') x ≐ -z (R x) ❙
+❚
 
 /T   This is a theory containing the boundary conditions for the
-     electron continuity equation modeling Ohmic contacts. 	
+     electron continuity equation modeling Ohmic contacts. ❚	
 	
 theory ContinuityBoundaryConditionsElectrons : top:?Base =
-	include device?DeviceOperationState 
-  /T Boundary condition for the top contact. 
-	potential_top : QE ElectricPotential  = U_1  # φ_n_1 
-  /T Boundary condition for the bottom contact. 
-	potential_bottom : QE ElectricPotential  = U_2  # φ_n_2 
-
+	include device?DeviceOperationState ❙
+  /T Boundary condition for the top contact. ❙
+	potential_top : QE ElectricPotential ❘ = U_1 ❘ # φ_n_1 ❙
+  /T Boundary condition for the bottom contact. ❙
+	potential_bottom : QE ElectricPotential ❘ = U_2 ❘ # φ_n_2 ❙
+❚
 
 /T   This is a theory containing the boundary conditions for the
-     holes continuity equation modeling Ohmic contacts. 	
+     holes continuity equation modeling Ohmic contacts. ❚	
 	
 theory ContinuityBoundaryConditionsHoles : top:?Base =
-	include device?DeviceOperationState 
-	/T Boundary condition for the top contact. 
-	potential_top : QE ElectricPotential  = U_1  # φ_p_1 
-	/T Boundary condition for the bottom contact. 
-	potential_bottom : QE ElectricPotential  = U_2  # φ_p_2 
-
\ No newline at end of file
+	include device?DeviceOperationState ❙
+	/T Boundary condition for the top contact. ❙
+	potential_top : QE ElectricPotential ❘ = U_1 ❘ # φ_p_1 ❙
+	/T Boundary condition for the bottom contact. ❙
+	potential_bottom : QE ElectricPotential ❘ = U_2 ❘ # φ_p_2 ❙
+❚
\ No newline at end of file
diff --git a/source/mmt/densities.mmt b/source/mmt/densities.mmt
index af435b1460b458be5d88aaf341020c9a5eff1394..bcc101e795b61f589048764ddb4ec5daf63f4584 100644
--- a/source/mmt/densities.mmt
+++ b/source/mmt/densities.mmt
@@ -1,22 +1,22 @@
-namespace http://mathhub.info/MitM/Models/densities 
-import top http://mathhub.info/MitM/Models 
-import arith http://mathhub.info/MitM/smglom/arithmetics 
+namespace http://mathhub.info/MitM/Models/densities ❚
+import top http://mathhub.info/MitM/Models ❚
+import arith http://mathhub.info/MitM/smglom/arithmetics ❚
 
 /T   This is a theory containing state equation for the 
-	   density for the Boltzmann approximation (exp). 	
-/T   Solution      
+	   density for the Boltzmann approximation (exp). ❚	
+/T   Solution ❚     
 theory DensityLaw : top:?Base =
-// meta model_type physical_law 
-	include device?DeviceOperationState 
-	include top:?PhysicalConstants  
-	include top:?Density  
-	include top:?SpatialDensity 
+// meta model_type physical_law ❙
+	include device?DeviceOperationState ❙
+	include top:?PhysicalConstants  ❙
+	include top:?Density ❙ 
+	include top:?SpatialDensity ❙
 	
 	structure electrostatic : top:?SpatialPotential =
-		domain = `top:/device?DeviceGeometry?domain 
-		potential # ψ 
-	 // should be an include, but... 
-	structure band : top:?Band = 
-	/T Formula for the electron density for the Boltzmann approximation. 
-	density_law : {x : Ω} ⊦ n x ≐ N ⋅ `arith:?realarith?exponentiation (scalar (((- q) ⋅ z ⋅ ((ψ x) - (φ x)) - E) / k_B ⋅ T)) 
-
\ No newline at end of file
+		domain = `top:/device?DeviceGeometry?domain ❙
+		potential # ψ ❙
+	❚ // should be an include, but... ❙
+	structure band : top:?Band = ❚
+	/T Formula for the electron density for the Boltzmann approximation. ❙
+	density_law : {x : Ω} ⊦ n x ≐ N ⋅ `arith:?realarith?exponentiation (scalar (((- q) ⋅ z ⋅ ((ψ x) - (φ x)) - E) / k_B ⋅ T)) ❙
+❚
\ No newline at end of file
diff --git a/source/mmt/device.mmt b/source/mmt/device.mmt
index 89c551c550550d9652de0342eb1f7f02f64e0021..4e3b9b0e9af6d8bfbcc7c80ed89ed9f3f87e5c5a 100644
--- a/source/mmt/device.mmt
+++ b/source/mmt/device.mmt
@@ -1,63 +1,63 @@
-namespace http://mathhub.info/MitM/Models/device 
-import top http://mathhub.info/MitM/Models 
+namespace http://mathhub.info/MitM/Models/device ❚
+import top http://mathhub.info/MitM/Models ❚
 
-/T   This theory intentionally left empty. It has a narrative in sTeX 
-/T   Background 
-theory Device = 
+/T   This theory intentionally left empty. It has a narrative in sTeX ❚
+/T   Background ❚
+theory Device = ❚
 
-/T   This is a theory containing description of device geometry. 
-/T   Parameter 
+/T   This is a theory containing description of device geometry. ❚
+/T   Parameter ❚
 theory DeviceGeometry : top:?Base =
-	include ?Device 
-	// domain_prop : ℝ3 → bool 
-	domain_prop : ℝ → bool 
-	/T The one-dimensional spatial domain of the device (denoted by $Ω$). 
-	// domain : type  = pred3 domain_prop  # Ω 
-	domain : type  = pred domain_prop  # Ω 
-
+	include ?Device ❙
+	// domain_prop : ℝ3 ⟶ bool ❙
+	domain_prop : ℝ ⟶ bool ❙
+	/T The one-dimensional spatial domain of the device (denoted by $Ω$). ❙
+	// domain : type ❘ = pred3 domain_prop ❘ # Ω ❙
+	domain : type ❘ = pred domain_prop ❘ # Ω ❙
+❚
 
 //   theory OneDimDeviceGeometry : top:?Base =
-	bottom : ℝ 
-	top : ℝ 
-	Interval_pred : ℝ → bool  = [r] bottom ≤ r ∧ r ≤ top 
-	Omega_Interval : type  = pred Interval_pred  # I  
+	bottom : ℝ ❙
+	top : ℝ ❙
+	Interval_pred : ℝ ⟶ bool ❘ = [r] bottom ≤ r ∧ r ≤ top ❙
+	Omega_Interval : type ❘ = pred Interval_pred ❘ # I ❙ 
 	
 	structure Geometry : ?DeviceGeometry =
-		domain_prop = t1↑ Interval_pred 
-	
-//   
+		domain_prop = t1↑ Interval_pred ❙
+	❚
+//   ❚
 
 //   theory TwoDimDeviceGeometry : top:?Base =
-	Plane_pred : ℝ2 → bool 
-	Omega_Plane : type  = pred2 Plane_pred  # G 
+	Plane_pred : ℝ2 ⟶ bool ❙
+	Omega_Plane : type ❘ = pred2 Plane_pred ❘ # G ❙
 	
 	structure Geometry : ?DeviceGeometry =
-		domain_prop = t2↑ Plane_pred 
-	
-//   
+		domain_prop = t2↑ Plane_pred ❙
+	❚
+//   ❚
 	
-/T   This is a theory containing description of the doping profile. 
-/T   Parameter 
+/T   This is a theory containing description of the doping profile. ❚
+/T   Parameter ❚
 theory DopingProfile : top:?Base =
-	include ?DeviceGeometry 
-	include top:?Density 
-  /T The doping profile, denoted by $C$. 
-	doping_profile : Ω →  QE density_dim  # C 
-
+	include ?DeviceGeometry ❙
+	include top:?Density ❙
+  /T The doping profile, denoted by $C$. ❙
+	doping_profile : Ω ⟶  QE density_dim ❘ # C ❙
+❚
 
 	
 /T   This is a theory containing a description the the operating state,
-     that means applied voltages and device temperature. 
-/T   Parameter 
+     that means applied voltages and device temperature. ❚
+/T   Parameter ❚
 theory DeviceOperationState : top:?Base =
-	include ?DeviceGeometry 
-	/T The global temperature of the device denoted by $T$. 
-	// temperature : Ω → ℝ  # T 
-	temperature : QE Temperature  # T 
-	/T The applied voltage at the bottom contact denoted by $U_1$. 
-	voltage_bottom : QE ElectricPotential  # U_1 
-	/T The applied voltage at the top contact denoted by $U_2$. 
-	voltage_top : QE ElectricPotential  # U_2 
+	include ?DeviceGeometry ❙
+	/T The global temperature of the device denoted by $T$. ❙
+	// temperature : Ω ⟶ ℝ ❘ # T ❙
+	temperature : QE Temperature ❘ # T ❙
+	/T The applied voltage at the bottom contact denoted by $U_1$. ❙
+	voltage_bottom : QE ElectricPotential ❘ # U_1 ❙
+	/T The applied voltage at the top contact denoted by $U_2$. ❙
+	voltage_top : QE ElectricPotential ❘ # U_2 ❙
 	
-	// prf : ⊦ k_B ⋅ T ≠ 0 . Energy 
-
\ No newline at end of file
+	// prf : ⊦ k_B ⋅ T ≠ 0 . Energy ❙
+❚
\ No newline at end of file
diff --git a/source/mmt/poisson.mmt b/source/mmt/poisson.mmt
index 1f08384000780effa77c875f4cb457d224315406..1d4f2d08e22e12e9162bf636d9c5d53199f44640 100644
--- a/source/mmt/poisson.mmt
+++ b/source/mmt/poisson.mmt
@@ -1,38 +1,38 @@
-namespace http://mathhub.info/MitM/Models/poisson 
-import mitm http://mathhub.info/MitM 
-import top http://mathhub.info/MitM/Models 
-import qe http://mathhub.info/MMT/physics-units 
+namespace http://mathhub.info/MitM/Models/poisson ❚
+import mitm http://mathhub.info/MitM ❚
+import top http://mathhub.info/MitM/Models ❚
+import qe http://mathhub.info/MMT/physics-units ❚
 
 
 /T   This is a theory containing a general formulation of 
-     the Poisson equation. 
+     the Poisson equation. ❚
 	
-// TODO as a view on elliptic pdes? 
+// TODO as a view on elliptic pdes? ❙
 theory PoissonEquation : top:?Base =
-  include mitm:/smglom/arithmetics?realarith 
+  include mitm:/smglom/arithmetics?realarith ❙
   
-  // TODO f, k and t as functions that are defined on Ω and return values of arbitrary QE on Ω 
-  f : Ω → QE // needs to be 2 times derivable in Ω but is usually determined to be that was
-  u : Ω → QE // additionally needs to be integrable => metricspaces?
+  // TODO f, k and t as functions that are defined on Ω and return values of arbitrary QE on Ω ❙
+  f : Ω ⟶ QE // needs to be 2 times derivable in Ω but is usually determined to be that was❙
+  u : Ω ⟶ QE // additionally needs to be integrable => metricspaces?❙
   
-  // the dimensions in which we derive (dx) as (subspace of) space where omega lies => probably implicitly by definition of f
+  // the dimensions in which we derive (dx) as (subspace of) space where omega lies => probably implicitly by definition of f❙
   
-  // general form of PE: usually f is unknown and needs to be solved for 
-	poisson_equation : {}  = <prop | [p] ⊦ ∃f ∃t p= ( d( k*(df/dx))/dx = t) >
+  // general form of PE: usually f is unknown and needs to be solved for ❙
+	poisson_equation : {} ❘ = <prop | [p] ⊦ ∃f ∃t p= ( d( k*(df/dx))/dx = t) >❙
 	
-
+❚
 
-/T   This is a theory containing the boundary values for the Poisson eqauation.  	
+/T   This is a theory containing the boundary values for the Poisson eqauation.  ❚	
 
-// TODO probably in a more general setting 
+// TODO probably in a more general setting ❙
 
 //   theory PoissonBoundaryConditions : top:?Base =
-	include ?ThermodynamicEquilibrium 
+	include ?ThermodynamicEquilibrium ❙
 	/T Boundary value for electrostatic potential at top contact 
-	     for an applied voltage $U_1$. 
-	potential_top : QE ElectricPotential  = ψ_0_1 + U_1  # ψ_1 
+	     for an applied voltage $U_1$. ❙
+	potential_top : QE ElectricPotential ❘ = ψ_0_1 + U_1 ❘ # ψ_1 ❙
 	/T Boundary value for electrostatic potential at bottom contact 
 	     for an applied voltage $U_2$.
-	     N.B.: the applied bias voltage is U_bias = $U_2-U_1$ 
-	potential_bottom : QE ElectricPotential  = ψ_0_2 + U_2  # ψ_2 
-
\ No newline at end of file
+	     N.B.: the applied bias voltage is U_bias = $U_2-U_1$ ❙
+	potential_bottom : QE ElectricPotential ❘ = ψ_0_2 + U_2 ❘ # ψ_2 ❙
+❚
\ No newline at end of file
diff --git a/source/mmt/poissonElectrostatics.mmt b/source/mmt/poissonElectrostatics.mmt
index 07af5a1efee4f33363c22056dd603e385e96917b..00bf6ba4e84ee312fc2f7ac548562ca5e4c16213 100644
--- a/source/mmt/poissonElectrostatics.mmt
+++ b/source/mmt/poissonElectrostatics.mmt
@@ -1,82 +1,82 @@
-namespace http://mathhub.info/MitM/Models/poissonElectrostatics 
-import top http://mathhub.info/MitM/Models 
-import qe http://mathhub.info/MMT/physics-units 
+namespace http://mathhub.info/MitM/Models/poissonElectrostatics ❚
+import top http://mathhub.info/MitM/Models ❚
+import qe http://mathhub.info/MMT/physics-units ❚
 
 /T   This is a theory containing the static dielectric permitivity constant
-     of the semiconductor. 
+     of the semiconductor. ❚
      
 theory PoissonParameters : top:?Base =
-    /T The relative dielelectric permitivity constant denoted by $ε_r$. 
-	relative_dielectric_permittivity : real_lit  # ε_r 
-	/T The static dielelectric permittivity constant denoted by $ε_s$. 
-	dielectric_permittivity : {ε_r : QE ( DimNone ), ε_0 : QE ( ElectricalPermittivity )} QE( DimNone ) → QE ( ElectricalPermittivity ) → QE ( ElectricalPermittivity ) // = ε_r ⋅ ε_0 // TODO implement QE arithmetics (?)  # ε_s 
-
+    /T The relative dielelectric permitivity constant denoted by $ε_r$. ❙
+	relative_dielectric_permittivity : real_lit ❘ # ε_r ❙
+	/T The static dielelectric permittivity constant denoted by $ε_s$. ❙
+	dielectric_permittivity : {ε_r : QE ( DimNone ), ε_0 : QE ( ElectricalPermittivity )} QE( DimNone ) ⟶ QE ( ElectricalPermittivity ) ⟶ QE ( ElectricalPermittivity ) ❘// = ε_r ⋅ ε_0 // TODO implement QE arithmetics (?) ❘ # ε_s ❙
+❚
 /T   This is a theory containing the total charge entering 
-     the right side of Poisson's equation. 
+     the right side of Poisson's equation. ❚
 	
 theory ChargeLaw : top:?Base =
-	include device?DeviceGeometry 
-	include device?DopingProfile 
-	include ?PoissonParameters 
-	include top:/Species?ElectronsAndHoles 
-	include top:?SpatialChargeDensity 
+	include device?DeviceGeometry ❙
+	include device?DopingProfile ❙
+	include ?PoissonParameters ❙
+	include top:/Species?ElectronsAndHoles ❙
+	include top:?SpatialChargeDensity ❙
 	
 	/T The total charge denoted by $Q$ composed of doping profile $C$ and 
      electron and hole densities $n$ and $p$, defined by
-     $Q$ = $q$($C$+$p$ - $n$). 
-	total_charge_density : {x : Ω} ⊦ Q x ≐ -q ⋅ ((C x) + (holes/z ⋅ (holes/density x)) + (electrons/z ⋅ (electrons/density x))) 
-
+     $Q$ = $q$($C$+$p$ - $n$). ❙
+	total_charge_density : {x : Ω} ⊦ Q x ≐ -q ⋅ ((C x) + (holes/z ⋅ (holes/density x)) + (electrons/z ⋅ (electrons/density x))) ❙
+❚
 
 //   theory DisplacementLaw : top:?Base =
-	include densities?ElectrostaticPotential 
-	include ?PoissonParameters 
-	include ?Displacement 
+	include densities?ElectrostaticPotential ❙
+	include ?PoissonParameters ❙
+	include ?Displacement ❙
 	
-	/T Expression for electric displacement denoted by $D$ = $- ε_s$ d/dx $ψ$  
+	/T Expression for electric displacement denoted by $D$ = $- ε_s$ d/dx $ψ$  ❙
 	
-	electric_displacement : Ω → displacement_dim 
-		= [x] -ε_s ⋅ (ψ ' x)  # D 
-
+	electric_displacement : Ω ⟶ displacement_dim ❘
+		= [x] -ε_s ⋅ (ψ ' x) ❘ # D ❙
+❚
 		
 
-/T   This is a theory containing Poissons equation. 
+/T   This is a theory containing Poissons equation. ❚
 
 //   theory PoissonEquation : top:?Base =
-	include ?Charge 
-	include ?Displacement 
+	include ?Charge ❙
+	include ?Displacement ❙
 	
 	/T Defintion of the Poisson equation with total charge 
-       as right hand side.  
-	poisson_equation : ⊦ D ' ≐ Q
+       as right hand side.  ❙
+	poisson_equation : ⊦ D ' ≐ Q❙
 
-
+❚
 
 /T   This is a theory containing build-in potential in 
-     thermodynamic equilibrium.  
+     thermodynamic equilibrium.  ❚
 
 //   theory ThermodynamicEquilibrium : top:?Base =
-	include ?Charge 
+	include ?Charge ❙
 	
 	/T Value of build-in potential ψ_0 at top contact guranteeing 
-       local charge neutrality.  
-	equilibrium_potential_top : QE ElectricPotential  # ψ_0_2 
+       local charge neutrality.  ❙
+	equilibrium_potential_top : QE ElectricPotential ❘ # ψ_0_2 ❙
  
 	/T Value of build-in potential ψ_0 at bottom contact guranteeing 
        local charge neutrality. 
-       N.B. the build-in potential is given as U_b = $ψ_0_2 - ψ_0_1$ (Check!) 
+       N.B. the build-in potential is given as U_b = $ψ_0_2 - ψ_0_1$ (Check!) ❙
      
-	equilibrium_potential_bottom : QE ElectricPotential  # ψ_0_1 
-
+	equilibrium_potential_bottom : QE ElectricPotential ❘ # ψ_0_1 ❙
+❚
 
-/T   This is a theory containing the boundary values for the Poisson eqauation.  	
+/T   This is a theory containing the boundary values for the Poisson eqauation.  ❚	
 	
 //   theory PoissonBoundaryConditions : top:?Base =
-	include ?ThermodynamicEquilibrium 
+	include ?ThermodynamicEquilibrium ❙
 	/T Boundary value for electrostatic potential at top contact 
-	     for an applied voltage $U_1$. 
-	potential_top : QE ElectricPotential  = ψ_0_1 + U_1  # ψ_1 
+	     for an applied voltage $U_1$. ❙
+	potential_top : QE ElectricPotential ❘ = ψ_0_1 + U_1 ❘ # ψ_1 ❙
 	/T Boundary value for electrostatic potential at bottom contact 
 	     for an applied voltage $U_2$.
-	     N.B.: the applied bias voltage is U_bias = $U_2-U_1$ 
-	potential_bottom : QE ElectricPotential  = ψ_0_2 + U_2  # ψ_2 
-
\ No newline at end of file
+	     N.B.: the applied bias voltage is U_bias = $U_2-U_1$ ❙
+	potential_bottom : QE ElectricPotential ❘ = ψ_0_2 + U_2 ❘ # ψ_2 ❙
+❚
\ No newline at end of file
diff --git a/source/mmt/recombination.mmt b/source/mmt/recombination.mmt
index 50e33d3e36682dacbd94d7be671e30ce5f8439de..eff374de2c51174655f522752a295a94a12cfb5b 100644
--- a/source/mmt/recombination.mmt
+++ b/source/mmt/recombination.mmt
@@ -1,27 +1,27 @@
-namespace http://mathhub.info/MitM/Models/recombination 
-import top http://mathhub.info/MitM/Models 
+namespace http://mathhub.info/MitM/Models/recombination ❚
+import top http://mathhub.info/MitM/Models ❚
 
 /T   This is a theory containing the general structure for 
-     a recombination rate. 
+     a recombination rate. ❚
      
 
      
 theory Recombination : top:?Base =
-  include top:/Species?ElectronsAndHoles 
-  include top:?RecombinationCoefficient 
-  include top:?RecombinationRate 
-	 /T Recombination rate for right hand side of continuity equations. 
+  include top:/Species?ElectronsAndHoles ❙
+  include top:?RecombinationCoefficient ❙
+  include top:?RecombinationRate ❙
+	 /T Recombination rate for right hand side of continuity equations. ❙
 	recombination_rate : {x : Ω} ⊦ R x ≐ 
 		(r (electrons/spatialdensity x) (holes/spatialdensity x)) â‹… (electrons/spatialdensity x) â‹… (holes/spatialdensity x)
-		â‹… (1 - (exponential (q â‹… ((electrons/fermi/potential x) - (holes/fermi/potential x)) / (k_B â‹… T)))) 
-
+		⋅ (1 - (exponential (q ⋅ ((electrons/fermi/potential x) - (holes/fermi/potential x)) / (k_B ⋅ T)))) ❙
+❚
 
-/T   Kernel for spontaneous recombination with coefficient B. 
+/T   Kernel for spontaneous recombination with coefficient B. ❚
 theory SpontaneousRecombination : top:?Base =
-	include ?Recombination 
+	include ?Recombination ❙
 	
-	/T The coefficient for the sponanteous recombination rate is denoted by $B$ 
-	spontaneous_recombination_coefficient : QE (Volume /' SItime)  # B
-	/T Formula for sponanteous recombination $r$($n$,$p$) = $B$ 
-	axiom_spontaneous : {x,y} ⊦ r x y ≐ B  role Simplify 
-
+	/T The coefficient for the sponanteous recombination rate is denoted by $B$ ❙
+	spontaneous_recombination_coefficient : QE (Volume /' SItime) ❘ # B❙
+	/T Formula for sponanteous recombination $r$($n$,$p$) = $B$ ❙
+	axiom_spontaneous : {x,y} ⊦ r x y ≐ B ❘ role Simplify ❙
+❚
diff --git a/source/mmt/species.mmt b/source/mmt/species.mmt
index 8488f6110c9ccf17b00e1c8d470b7600f32f802e..8fd488f557cfe889b8e914f3b69bdcb0c3cf98de 100644
--- a/source/mmt/species.mmt
+++ b/source/mmt/species.mmt
@@ -1,21 +1,21 @@
-namespace http://mathhub.info/MitM/Models/Species 
-import top http://mathhub.info/MitM/Models 
+namespace http://mathhub.info/MitM/Models/Species ❚
+import top http://mathhub.info/MitM/Models ❚
 
 theory Species : top:?Base =
-	include densities?DensityLaw 
-	include top:?SpatialCurrentDensity 
-	// include CurrentLaw 
-
+	include densities?DensityLaw ❙
+	include top:?SpatialCurrentDensity ❙
+	// include CurrentLaw ❙
+❚
 	
 theory Electrons : top:?Base =
-	structure electrons : ?Species = 
-
+	structure electrons : ?Species = ❚
+❚
 	
 theory Holes : top:?Base =
-	structure holes : ?Species = 
-
+	structure holes : ?Species = ❚
+❚
 	
 theory ElectronsAndHoles : top:?Base =
-	include ?Electrons 
-	include ?Holes 
-
\ No newline at end of file
+	include ?Electrons ❙
+	include ?Holes ❙
+❚
\ No newline at end of file
diff --git a/source/thermistor/quantities.mmt b/source/thermistor/quantities.mmt
index ddedcc31071eb2b16dacacb652a27234d5412f57..7dcb2fbeca59ce09f1f47494f3417b6937818513 100644
--- a/source/thermistor/quantities.mmt
+++ b/source/thermistor/quantities.mmt
@@ -1,229 +1,229 @@
-namespace http://mathhub.info/MitM/Models/thermistor 
-import qe http://mathhub.info/MMT/physics-units 
-import top http://mathhub.info/MitM/Models 
+namespace http://mathhub.info/MitM/Models/thermistor ❚
+import qe http://mathhub.info/MMT/physics-units ❚
+import top http://mathhub.info/MitM/Models ❚
 
-/T   This theory intentionally left empty. It has a narrative in sTeX 
-/T   Background 
-theory Device = 
+/T   This theory intentionally left empty. It has a narrative in sTeX ❚
+/T   Background ❚
+theory Device = ❚
 
-/T   This is a theory containing description of device geometry. 
-/T   Parameter 
+/T   This is a theory containing description of device geometry. ❚
+/T   Parameter ❚
 theory DeviceGeometry : top:?Base =
-	include ?Device 
-	// domain_prop : ℝ3 → bool 
-	domain_prop : ℝ → bool 
-	/T The one-dimensional spatial domain of the device (denoted by $Ω$). 
-	domain : type  = pred domain_prop  # Ω 
-
+	include ?Device ❙
+	// domain_prop : ℝ3 ⟶ bool ❙
+	domain_prop : ℝ ⟶ bool ❙
+	/T The one-dimensional spatial domain of the device (denoted by $Ω$). ❙
+	domain : type ❘ = pred domain_prop ❘ # Ω ❙
+❚
 
 theory SpatialPotential : top:?Base =
-  include ?DeviceGeometry 
+  include ?DeviceGeometry ❙
   /T Spatial variation of the potential,
-	   usually denoted by $φ$. 
-	potential : Ω → (QE ElectricPotential)  # φ	
-
+	   usually denoted by $φ$. ❙
+	potential : Ω ⟶ (QE ElectricPotential) ❘ # φ❙	
+❚
 
 theory ElectricFieldStrength : qe:?QEBase =
-  electricfieldstrength_dim : type  = QE (ElectricPotential /' SIlength) 
-  electricfieldstrength : electricfieldstrength_dim 
-
+  electricfieldstrength_dim : type ❘ = QE (ElectricPotential /' SIlength) ❙
+  electricfieldstrength : electricfieldstrength_dim ❙
+❚
 
 	
 theory SpatialElectricField : top:?Base =
-  include ?DeviceGeometry 
-  include ?ElectricFieldStrength 
+  include ?DeviceGeometry ❙
+  include ?ElectricFieldStrength ❙
   /T Spatial variation of the electric field strength,
-	   usually denoted by $E$. 
-	electricfield : Ω → (electricfieldstrength_dim)  # E	
-
+	   usually denoted by $E$. ❙
+	electricfield : Ω ⟶ (electricfieldstrength_dim) ❘ # E❙	
+❚
 
 theory CurrentDensity : qe:?QEBase =
-  // meta modeltype physical_quantity 
-	currentdensity_dim : type  = QE (SIcurrent /' Area) 
-	currentdensity : currentdensity_dim 
-
+  // meta modeltype physical_quantity ❙
+	currentdensity_dim : type ❘ = QE (SIcurrent /' Area) ❙
+	currentdensity : currentdensity_dim ❙
+❚
 	
 	
 theory SpatialCurrentDensity : top:?Base =
-  include ?DeviceGeometry 
-  include ?CurrentDensity 
-	currentdensity : Ω → (currentdensity_dim)  # j 1 
-
+  include ?DeviceGeometry ❙
+  include ?CurrentDensity ❙
+	currentdensity : Ω ⟶ (currentdensity_dim) ❘ # j 1 ❙
+❚
 
 theory ElectricalConductivity : qe:?QEBase =
-  // meta modeltype physical_quantity 
-	electricalconductitvity_dim : type  = QE (SIcurrent /' (ElectricPotential * SIlength)) 
-	electricalconductitvity : electricalconductitvity_dim 
-
+  // meta modeltype physical_quantity ❙
+	electricalconductitvity_dim : type ❘ = QE (SIcurrent /' (ElectricPotential * SIlength)) ❙
+	electricalconductitvity : electricalconductitvity_dim ❙
+❚
 	
 	
 theory SpatialElectricalConductivity : top:?Base =
-  include ?DeviceGeometry 
-  include ?ElectricalConductivity 
-	spatialelectricalconductivity : Ω → (electricalconductitvity_dim)  # σ 1 
-
+  include ?DeviceGeometry ❙
+  include ?ElectricalConductivity ❙
+	spatialelectricalconductivity : Ω ⟶ (electricalconductitvity_dim) ❘ # σ 1 ❙
+❚
 
 theory SpatialReferenceConductivity : top:?Base =
-  include ?DeviceGeometry 
-  include ?ElectricalConductivity 
-	spatialreferenceconductivity : Ω → (electricalconductitvity_dim)  # σ_0 1 
-
+  include ?DeviceGeometry ❙
+  include ?ElectricalConductivity ❙
+	spatialreferenceconductivity : Ω ⟶ (electricalconductitvity_dim) ❘ # σ_0 1 ❙
+❚
 	
 theory SpatialReferenceElectricalField : top:?Base =
-  include ?DeviceGeometry 
-  include ?ElectricalFieldStrength 
-  referebceelectricfield : Ω → (electricfieldstrength_dim)  # Eref	
-
+  include ?DeviceGeometry ❙
+  include ?ElectricalFieldStrength ❙
+  referebceelectricfield : Ω ⟶ (electricfieldstrength_dim) ❘ # Eref❙	
+❚
 	
 theory SpatialFieldEnhancement : top:?Base =
-   include ?DeviceGeometry 
-   spatialfieldenhancement :  Ω → ℝ  # G	
-
+   include ?DeviceGeometry ❙
+   spatialfieldenhancement :  Ω ⟶ ℝ ❘ # G❙	
+❚
 
 theory SpatialLaplacep : top:?Base =
-   include ?DeviceGeometry 
-   spatiallaplacep :  Ω → ℝ  # p	
-
+   include ?DeviceGeometry ❙
+   spatiallaplacep :  Ω ⟶ ℝ ❘ # p❙	
+❚
       
 theory SpatialArrheniusFaktor : top:?Base =
-   include ?DeviceGeometry 
-   spatialarrheniusfaktor :  Ω → ℝ  # F	   
-
+   include ?DeviceGeometry ❙
+   spatialarrheniusfaktor :  Ω ⟶ ℝ ❘ # F❙	   
+❚
    
 theory Heat : qe:?QEBase =
-  // meta modeltype physical_quantity 
-	heat_dim : type  = QE (Energy) 
-	heat : heat_dim 
-
+  // meta modeltype physical_quantity ❙
+	heat_dim : type ❘ = QE (Energy) ❙
+	heat : heat_dim ❙
+❚
 	
 theory SpatialHeatSource : top:?Base =
-  include ?DeviceGeometry 
-  include ?Heat 
-	spatialheatsource : Ω → (heat_dim)  # Q 1 
-
+  include ?DeviceGeometry ❙
+  include ?Heat ❙
+	spatialheatsource : Ω ⟶ (heat_dim) ❘ # Q 1 ❙
+❚
 
 theory SpatialJouleHeat : top:?Base =
-  include ?DeviceGeometry 
-  include ?Heat 
-	spatialheatsource : Ω → (heat_dim)  # Q_Joule 1 
-
+  include ?DeviceGeometry ❙
+  include ?Heat ❙
+	spatialheatsource : Ω ⟶ (heat_dim) ❘ # Q_Joule 1 ❙
+❚
 
 theory ThermalConductivity : qe:?QEBase =
-  include ?Heat 
-  // meta modeltype physical_quantity 
-	thermalconductitvity_dim : type  = QE ( Energy /' (SIlength * SItemperature)) 
-	thermalconductitvity : thermalconductitvity_dim 
-
+  include ?Heat ❙
+  // meta modeltype physical_quantity ❙
+	thermalconductitvity_dim : type ❘ = QE ( Energy /' (SIlength * SItemperature)) ❙
+	thermalconductitvity : thermalconductitvity_dim ❙
+❚
 	
 theory SpatialThermalConductivity : top:?Base =
-  include ?DeviceGeometry 
-  include ?ThermalConductivity 
-	spatialthermalconductivity : Ω → (thermalconductitvity_dim)  # λ 1 
-
+  include ?DeviceGeometry ❙
+  include ?ThermalConductivity ❙
+	spatialthermalconductivity : Ω ⟶ (thermalconductitvity_dim) ❘ # λ 1 ❙
+❚
 
 theory ThermalHeatFlux : qe:?QEBase =
-  // meta modeltype physical_quantity  electricfield_law : {x : Ω} ⊦ E x ≐ - ((φ ') x) / unitlengt 
-	thermalheatflux_dim : type  = QE (Energy /' Area) 
-	thermalheatflux : thermalheatflux_dim 
-
+  // meta modeltype physical_quantity  electricfield_law : {x : Ω} ⊦ E x ≐ - ((φ ') x) / unitlengt ❙
+	thermalheatflux_dim : type ❘ = QE (Energy /' Area) ❙
+	thermalheatflux : thermalheatflux_dim ❙
+❚
 	
 theory SpatialHeatFluxDensity : top:?Base =
-  include ?DeviceGeometry 
-  include ?ThermalHeatFlux 
-	heatfluxdensity : Ω → (thermalheatflux_dim)  # q 1 
-
+  include ?DeviceGeometry ❙
+  include ?ThermalHeatFlux ❙
+	heatfluxdensity : Ω ⟶ (thermalheatflux_dim) ❘ # q 1 ❙
+❚
 	  
 theory SpatialTemperature : top:?Base =
-  include ?DeviceGeometry 
+  include ?DeviceGeometry ❙
   /T Spatial variation of the potential,
-	   usually denoted by $φ$. 
-	potential : Ω → (QE Temperature)  # T	
-
+	   usually denoted by $φ$. ❙
+	potential : Ω ⟶ (QE Temperature) ❘ # T❙	
+❚
 
 theory ReferenceTemperature : top:?Base =
-include ?DeviceGeometry 
+include ?DeviceGeometry ❙
   /T Spatial variation of the potential,
-	   usually denoted by $φ$. 
-	referencetemperature : QE SItemperature  # Tref	
-
+	   usually denoted by $φ$. ❙
+	referencetemperature : QE SItemperature ❘ # Tref❙	
+❚
 
 
 theory ActivationEnergy : top:?Base =
-include ?DeviceGeometry 
+include ?DeviceGeometry ❙
   /T Spatial variation of the potential,
-	   usually denoted by $φ$. 
-	activationenergy : QE Energy  # E_act	
-
+	   usually denoted by $φ$. ❙
+	activationenergy : QE Energy ❘ # E_act❙	
+❚
 
 	
 theory ElectricFieldLaw : top:?Base =
-  include ?DeviceGeometry 
-  include ?SpatialElectricField  
-  include ?SpatialPotential 
-	electricfield_law : {x : Ω} ⊦ E x ≐ -((QEderiv φ) x) 
-
+  include ?DeviceGeometry ❙
+  include ?SpatialElectricField  ❙
+  include ?SpatialPotential ❙
+	electricfield_law : {x : Ω} ⊦ E x ≐ -((QEderiv φ) x) ❙
+❚
 
 theory OhmsLaw : top:?Base =
-  include ?DeviceGeometry 
-  include ?SpatialCurrentDensity  
-  include ?SpatialElectricField  
-  include ?SpatialElectricalConductivity 
-	ohmscurrent_law : {x : Ω} ⊦ j ≐ (σ x) ⋅ (E x) 
-
+  include ?DeviceGeometry ❙
+  include ?SpatialCurrentDensity  ❙
+  include ?SpatialElectricField  ❙
+  include ?SpatialElectricalConductivity ❙
+	ohmscurrent_law : {x : Ω} ⊦ j ≐ (σ x) ⋅ (E x) ❙
+❚
 
 theory KirchhoffsCurrentLaw : top:?Base =
-  include ?DeviceGeometry 
-  include ?SpatialCurrentDensity  
-	kirchhoffscurrent_law : {x : Ω} ⊦ ((QEderiv j) x) ≐ 0
-
+  include ?DeviceGeometry ❙
+  include ?SpatialCurrentDensity  ❙
+	kirchhoffscurrent_law : {x : Ω} ⊦ ((QEderiv j) x) ≐ 0❙
+❚
  
 theory JouleHeat : top:?Base =
-  include ?DeviceGeometry 
-  include ?SpatialJouleHeat  
-  include ?SpatialCurrentDensity  
-  include ?SpatialElectricField 
-	jouleheat : {x : Ω} ⊦ Q_Joule ≐ (j x) ⋅ (E x) 
-
+  include ?DeviceGeometry ❙
+  include ?SpatialJouleHeat  ❙
+  include ?SpatialCurrentDensity  ❙
+  include ?SpatialElectricField ❙
+	jouleheat : {x : Ω} ⊦ Q_Joule ≐ (j x) ⋅ (E x) ❙
+❚
 
 theory FieldEnhancement : top:?Base =
-  include ?DeviceGeometry 
-  include ?SpatialFieldEnhancement  
-  include ?SpatialElectricField 
-  include ?SpatialReferenceElectricField 
-  include ?SpatialLaplacep 
+  include ?DeviceGeometry ❙
+  include ?SpatialFieldEnhancement  ❙
+  include ?SpatialElectricField ❙
+  include ?SpatialReferenceElectricField ❙
+  include ?SpatialLaplacep ❙
   
-	fieldenhancement : {x : Ω} ⊦ G ≐ |(E x) / (Eref x)|^(p-2) 
-
+	fieldenhancement : {x : Ω} ⊦ G ≐ |(E x) / (Eref x)|^(p-2) ❙
+❚
 	
 theory ArrheniusLaw : top:?Base =
-  include ?DeviceGeometry 
-  include ?SpatialArrheniusFactor  
-  include ?SpatialActivationEnergy 
-  include ?ReferenceTemperature 
-  include ?SpatialTemperature 
+  include ?DeviceGeometry ❙
+  include ?SpatialArrheniusFactor  ❙
+  include ?SpatialActivationEnergy ❙
+  include ?ReferenceTemperature ❙
+  include ?SpatialTemperature ❙
   
-	arrhenius_law : {x : Ω} ⊦ F ≐ exp( ( E_act / k_B) ⋅ (1 / (T x) - 1 / Tref) 
-
+	arrhenius_law : {x : Ω} ⊦ F ≐ exp( ( E_act / k_B) ⋅ (1 / (T x) - 1 / Tref) ❙
+❚
 	
 theory ConductivityLaw : top:?Base =
-  include ?DeviceGeometry 
-  include ?SpatialElectricalConductivity  
-  include ?SpatialReferenceConductivity  
-  include ?SpatialArrheniusFactor  
-  include ?SpatialFieldEnhancement 
-  include ?ReferenceTemperature 
-  include ?SpatialTemperature 
+  include ?DeviceGeometry ❙
+  include ?SpatialElectricalConductivity  ❙
+  include ?SpatialReferenceConductivity  ❙
+  include ?SpatialArrheniusFactor  ❙
+  include ?SpatialFieldEnhancement ❙
+  include ?ReferenceTemperature ❙
+  include ?SpatialTemperature ❙
   
-	conductivity_law : {x : Ω} ⊦ σ ≐ (σ_0 x) ⋅ (F x) ⋅ G(x) 
-
+	conductivity_law : {x : Ω} ⊦ σ ≐ (σ_0 x) ⋅ (F x) ⋅ G(x) ❙
+❚
 	
 theory FouriersLaw : top:?Base =
-  include ?DeviceGeometry 
-  include ?SpatialThermalConductivity  
-  include ?SpatialTemperature  
+  include ?DeviceGeometry ❙
+  include ?SpatialThermalConductivity  ❙
+  include ?SpatialTemperature  ❙
 
   
-	conductivity_law : {x : Ω} ⊦ σ ≐ (σ_0 x) ⋅ (F x) ⋅ (G x) 
-
+	conductivity_law : {x : Ω} ⊦ σ ≐ (σ_0 x) ⋅ (F x) ⋅ (G x) ❙
+❚
 	
 	
\ No newline at end of file