[PD] Problem with path and Pd Vanilla

[Jack]

I have installed Pd Vanilla 0.42-5.

In /usr/lib/pd, i have /bin, /doc and /extra.

In /doc/5.reference, i have /Gem, /pmpd, /zexy.

In /Gem, i put /abstractions, /examples and /help.
In /pmpd, i put /exemples and /help.
In /zexy, i put /examples and /reference

I have added path :
/usr/lib/pd/extra/Gem
/usr/lib/pd/extra/zexy
/usr/lib/pd/extra/pmpd
/usr/lib/pd/doc/5.reference/Gem/abstractions

All works fine with the externals, but when i try to create [gemmouse],
i get in the console : gemmouse, couldn't create.

gemmouse.pd is in the /usr/lib/pd/doc/5.reference/Gem/abstractions.
Where is the problem ?

Another question :
Is it a good idea to put /examples and /help in the same directory (in
my case : /5.reference/Gem or /5.reference/pmpd or /5.reference/zexy) ?
Or is it better to separate them (like pd-extended) ? When i right-click
on an object and ask 'help', Pd search automatically in
the /usr/lib/pd/doc/5.reference or not ?
Thanx.
++

Jack