is it possible that a lisp file can read it's own location?

and if so... how?

Thanks in advance

LISP does not suffer the benefit of being able to identify the location of where the executing code has been loaded from (the actual .LSP, .FAS, or .VLX file), in the same way a .NET assembly can use:

string executingCodeFile = System.IO.Path.GetFileNameWithoutExtension(System.Reflection.Assembly.GetExecutingAssembly().Location);

Your best available option, is to assume that the code file resides within the Support File Search Path (SFSP), and query its location by means of the FINDFILE Function... Which also implicitly requires one hard-code a known file name, and file extension as well (or iterate potential values).

Cheers