I don't think those cells are used in any way in "ordinary" documentation.
There are no traces of anything from those cells in built notebooks, nor in any other file in deployed application.
If we search for strings, labeling those cells, in packages comming with workbench, we'll find them in
This package has some functions that can extract data, like usage cells, or syntax templates, from notebook, transform and write them to
Functions mentioned above are used in
So it seems that cells from question are somehow related with something called Function Paclets.
Quoting comment from
This file contains code for the task of processing the specialized author notebook for
single-function paclets into a standard paclet and auxiliary files. Paaclet building
includes creation of a PacletInfo.m file from metadata in the notebook, pulling the
implementation section out into a .m file, processing the docs into the standard in-product
format, and packing everything into a .paclet file. There is also functionality for
building a marketing page for the paclet and building HTML docs.
This code is called from a WRI server application when authors upload function paclet
notebooks. It can also be called on user machines to perform the processing steps locally.
It seems that
DocumentationBuild`FunctionPaclets` package can build a
FunctionInformation.m file mentioned in answer to User-defined template; removing repeated text (v 9.0.1) question
Paclet Development there are two options:
Function Paclet Support and
Function Paclet Infrastructure, that can be checked.
They are labeled as experimental and I couldn't find anything about Function Paclets in worbench documentation.
If we switch on those experimental options we'll be able to check additional option
Full function paclet in "application project" creation wizard.
In "function paclet application project" paclet editor has some additional buttons
Create/Install/Uninstall Paclet and
Create Submission, but I have not played with them yet.