These files are a list of modules to load.
They can be of 2 types, global or by module.
Global, they have the name "bgdc.imp" and or "bgdc.import", and they should be in the compiler's directory.
Local, they are by project, the name is "<the prg's name>.imp" and or "<the prg's name>.import", and they should be in the .prg's directory.
The names of the modules should specify without extension, for example, for "mod_cd.dll" or "mod_cd.so", only "mod_cd" is necessary to put. (Without ")
One module by line should be specified.
NOTE:
This feature is optional, you can use the classic "import" keyword in your prg.
This file only is useful in compiler's time.