Document all recently added workflow templates.

doc/JobTemplate/Global/PrepareJob.rst

@@ -0,0 +1,40 @@
+.. _JOBTMPL/PrepareJob:
+
+PrepareJob
+##########
+
+The ``PrepareJob`` job template is a workaround for the limitations of GitHub Actions to handle global variables in
+GitHub Actions workflows (see `actions/runner#480 <https://github.com/actions/runner/issues/480>`__.
+
+It generates output parameters with artifact names and a job matrix to be used in later running jobs.
+
+**Behavior:**
+
+.. todo:: Parameters:Behavior Needs documentation.
+
+**Dependencies:**
+
+*None*
+
+Instantiation
+*************
+
+Simple Example
+==============
+
+The following instantiation example creates a job `Params` derived from job template `Parameters` version `r0`. It only
+requires a `name` parameter to create the artifact names.
+
+.. code-block:: yaml
+
+   name: Pipeline
+
+   on:
+     push:
+     workflow_dispatch:
+
+   jobs:
+     Params:
+       uses: pyTooling/Actions/.github/workflows/PrepareJob.yml@r0
+       with:
+         name: pyTooling