optset files in Delphi IDE and APIs Posted Saturday at 04:16 PM I often have different optset files containing unit search path entries. Usually I separate them by library name. F.i. there is one optset for TMS Scripter or GLScene, where several folders have to be added to the search path. As my folder layout for projects is consistent, the search path for each library is the same for each project. Thus I only have to add that optset to each project (only the first one, the others with drag'n'drop) to add the necessary folders to the project search path. As a gimmick I can see immediately which libraries a project depends on. This is als pretty convenient when the projects inside a project group share a couple of local folders in their search path. Using an optset for that makes changing the search path for all projects at once just a breeze. Unfortunately FinalBuilder is not able to resolve those optset references. Therefore I have written a small program doing that, which is called immediately before the compile action. Regarding RSP-14723: Indeed, optset references are not removed from the dproj. As that is not very common in my workflow I usually fix this by editing the dproj manually.