home.md

@@ -11,10 +11,15 @@ MathHub.info consists of three parts:
 * a [build system](https://buildsystem.mathhub.info) that manages the compilation of sources
 * a knowledge management server: the [MMT API](https://stexmmt.mathhub.info) 
 
-Applications include the ALeA system (Adaptive Learning Assistant) that uses semantic annotations for personalized learning support services. Archives for Flexiformal Mathematics in Math
+Applications include the ALeA system (Adaptive Learning Assistant) that uses semantic annotations for personalized learning support services. 
 
+### [GL.MathHub.info](https://gl.mathhub.info) 
 
-The content of the archive is mostly in the OMDoc/MMT and sTeX (a semantic extension of LaTeX) formats. Every GIT repository is structured as a Math archive for processing by the MMT knowledge processing system.
+The content on [GL.MathHub.info](https://gl.mathhub.info)  is mostly in the [OMDoc/MMT](https://uniformal.github.io/doc/language/) (for fully formal content) and [sTeX](https://github.com/sLaTeX/sTeX) (a semantic extension of LaTeX) formats, but other source formats like semantically annotated Word/PPT (via WOIDE and CPoint) and Markdown also work as long as they can generate [SHTML](https://hackmd.io/@X5Y0GrH0RY-KPMg2uH7o5Q/ByvrtDbFn) -- the MathHub.info lingua franca. 
+
+The [GL.MathHub.info](https://gl.mathhub.info) is organized into [math archives](https://uniformal.github.io/doc/archives/), collections of source files and generated representations with a [specified directory structure](https://uniformal.github.io/doc/archives/). On [GL.MathHub.info](https://gl.mathhub.info)  math archives directly correspond to GIT repositories. This gives us authentication and user management. 
+
+The repositories are organized via [GitLab groups](https://docs.gitlab.com/ee/user/group/) for structure and authorization. 
 
 ### Topics/Details
 * [Licensing](licensing)
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