The Project Inspector is an excellent tool for project management, and gives you great flexibility in which files you include as part of the project.
A drawback arises over backup when there are subdirectories of metadata files which are part of a project.
Lazarus faithfully creates a backup directory for all project files. For lots of metadata this is unnecessary, since the data does not change, and it just wastes disk space.
Although such backup directories can be deleted manually, I find they tend to reappear.
Is there any way to force the Lazarus backup system to distinguish between .pas, .lfm etc. files, and between say .txt, .dat and .hex files which do not require backing up, even though they are included as integral to the project (and usefully so, since e.g. publishing the project then includes them automatically)?