Perl Modules, Risc OS and File Types

Is there a better way we could name perl modules in RiscOs Perl?

Currently a module is called "Common/pm", which includes the "/pm" as part of
the
name used by perl to find a module.  On Risc OS < 4, long module names get
truncated so I have other modules "GlobalData" and "Local_Data", which being
10 chars long dont have the "/pm" at the end.  I believe perl tries to find
"GlobalData/pm" but the "/pm" is silently ignored.  I have just upgraded to RO4
on one machine, now I have problems, on RO4 it looks for "GlobalData/pm" and
does not find it if I have simply copied the file from the another machine.

My short term soloution is to run a little (perl) program after I copy a bunch
of
perl modules across to look for perl modules and append the "/pm" on the name if
necessary.  I have defined a FileType for all perl modules, that makes this easy
to do.  The particular FileType Number I use is not suitable for wide use - 008,
though I do have a filetype (xxx cant remember what) that was assigned years
ago to me and never used, (I had 4 assigned but only ever used 3 for !Arctic).

I think it would be better if perl did not need the file names to have the "/pm"
in the name, but used the basic name, or possibly a file type, as alternitives.

Thoughts anybody?

Richard (at work)