I am not firm with the use of thr "project" handling in the ide and wanted to start with that. But i think i need a little help.

First i went a little angry, because when i take a existing target file and insert that as default target in the project the defined options would not be taken within, so i have to do the job twice. It would be nice to use the "old" options by inserting in the project.
Next i get all running if i have a project with one target and a bunch of source files.
When i use a more complicated bunch of source and target files i do not get it working. As explainment: I have a bunch of pbi files with many functions which are used by a bunch of pb target files. Not all target files have the same compiler options, some are console programs and some are gui programs. This i get only to work if i use a separate project for each target. But if i change a pbi file which is used in more than one target (and therefor project), not all targets would be compiled. And it would be good to have all projects i have to build as one project, because it is one project. Is that possible? If yes, can someone explain me how to use that or have a link for a description of the use? Thanks.
Sigi