- fix link to expressions syntax (upgrade v1912)
- add mirror information
- repos jump directly to /Development
- additional quick links to repo and issues

precompiled.md

@@ -4,6 +4,9 @@
 [![modules](/icons/layers.svg "modules")](/modules)
 [![build](/icons/cpu.svg "build")](/building)
 [![running](/icons/play.svg "running")](/running)
+[![repo](/icons/gitlab.svg "repo")][foam-repo]
+[![issues](/icons/message-square.svg "issues")][foam-issues]
+
 
 To make OpenFOAM readily available to a larger range of users,
 OpenCFD works actively with the community surrounding
@@ -21,10 +24,9 @@ the following:
 Debian/Ubuntu and openSUSE generally receive first attention:
 
 1. Debian/Ubuntu is a very popular distribution with OpenFOAM users.
-2. openSUSE is historically the internal development platform of
-   OpenCFD Ltd. Since it is an RPM-based system, it is generally
-   possible to use a well-crafted spec file to subsequently address
-   RedHat-based distributions.
+2. openSUSE is historically the favoured development platform for
+   OpenCFD Ltd. Since it is an RPM-based system, a well-crafted spec
+   file can also address RedHat-based distributions.
 
 [[_TOC_]]
 
@@ -150,3 +152,6 @@ reference purposes, and to help when scripting:
 ----
 
 Copyright (C) 2020 OpenCFD Ltd.
+
+[foam-repo]:    https://develop.openfoam.com/Development/openfoam/
+[foam-issues]:  https://develop.openfoam.com/Development/openfoam/-/issues