Suggestion for improvement of Code development guide
Community contributors who want to fix a bug or make an improvement to OpenFOAM will often have an older compiled version of the OpenFOAM-plus develop branch on their local computer. The proper workflow for such people would (as I understand it) be to git pull the latest OpenFOAM-plus, recompile it and then introduce their changes in a bug-fix/feature branch derived from there. However, if API changes have occurred since their last git pull, the recompilation will fail due to outdated dep files etc. Having to wait for a full recompilation of everything every time I wanted to contribute has been a source of frustration for me until I discovered the -u/-update flag of the Allwmake script, which removes deprecated files and directories so the updating becomes much faster.
I therefore suggest to make contributors aware of this flag in the code development guide here.