docs: add more explanations to about page

docs/about.md

@@ -6,16 +6,17 @@ interactive documentation, modern software development tools, and
 collaboration-independent frameworks. **Contact details** can be found
 [here](https://github.com/ComPWA).
 
-:::{note}
-
-This page sets out some of the ideals of the ComPWA organization. For practical
-details, see the {doc}`develop page <develop>`.
-
-:::
-
 ## Main projects
 
-The main projects that ComPWA is currently developing are:
+ComPWA maintains **three main Python packages** with which you can do a full
+partial wave analysis. The packages are designed as **libraries**, so that they
+can be used separately by other projects.
+
+Each of these libraries come with **interactive and interlinked documentation**
+that is intended to bring theory and code closer together. The PWA Pages takes
+that one step further: it is an independent and easy-to-maintain documentation
+project that can serve as a central place to gather links to PWA theory and
+software.
 
 :::{panels}