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        Tue, 30 Jun 2015 13:36:06 -0700 (PDT)
Date: Tue, 30 Jun 2015 23:36:04 +0300
From: "Vladimir Zhbanov (vzhbanov AT gmail DOT com) [via geda-help AT delorie DOT com]" <geda-help AT delorie DOT com>
To: geda-help AT delorie DOT com
Subject: Re: [geda-help] net= attributes get merged at net and pcb creation
 phase
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Hi, Ala'a.

Input and output ports are meant to be used for hierarchical schematics.
So you can use one toplevel schematic and symbols for sub-circuits in
it, which pins are represented by the input and output symbols inside
the sub-circuits. So when you connect those pins you connect the
corresponding inputs and outputs of the sub-schematics. The refdeses of
the i/o symbols must correspond to pinnumbers of those symbols (AFAIR).

If you need hierarchy, there are examples of it in the geda-gaf
repository.

If you don't want to use hierarchy, just add netname attributes you want
for your nets and don't use the input or output symbols at all. Gnetlist
can work with multiple symbols at once.

Cheers,
  Vladimir