Any other program than those mentioned above may be called by the menu item ``Other program ...''. In the dialog box you must enter the filename of the program. Of course you can also enter program parameters, you can select a working directory, and you can redirect standard input and standard output.
Most programs take filenames as parameters. Therefore the GEM file selector box will appear if you doubleclick at the ``Parameters'' field. You may e. g. first select a filename and then edit the field appropriately.
If no working directory is selected explicitly with the file selection handler the directory of the dependent program is taken as the working directory. Note: If a GEM program needs a resource file it usually tries to load it from the working directory and failes if the working directory is not the directory the program itself is located. Therefore no working directory should be selected if such a program is to be started.