I think that "Paths" settings has long ago evolved into what should be
called "Modules" Settings.
It has been a long time now that it is used to configure much more than
the old single module classpath / src / classes directory configuration.
It is used to add, delete and configure modules.
I suggest changing its name to "Modules", as it will make more sense,
especially to new IJ users that don't know all the history behind it.
Amnon I. Govrin