[PD] library cpu load

[João Miguel Pais]

Hello,

I was curious about the following: when someone install several libraries
but doesn't use them, do they keep space in memory? And if so, much
(probably variable from case to case)?
In a real performance, if somebody wants to minimize risks, is it advisable
to unload all unecessary llibraries, or they are only used when the object
is used?

João Miguel Pais