Icon Libraries are saved in a format very similar to program files. The only difference is that they contain only icons and nothing more. Icon Libraries usually have a file extension of ICL. Librarian allows all types of changes to these files.
These files have the file extensions EXE, DLL, CPL, OCX, and SCR. They contain icons as well as program code and other resources used by the application. Librarian will allow these files to be viewed and allow icons inside of them to be edited. It will not allow icons to be added or deleted. Image formats can be added or removed when running under Windows 2000, XP, or NT4.