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	Sat, 18 Jul 2015 00:10:47 -0700 (PDT)
Date:	Sat, 18 Jul 2015 10:10:44 +0300
From:	"Vladimir Zhbanov (vzhbanov AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] Difference between attached and detached attributes
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Hi, Girvin.

On Fri, Jul 17, 2015 at 12:45:57PM -0700, Girvin R. Herr (gherr375 AT sbcglobal DOT net) [via geda-user AT delorie DOT com] wrote:
...
> So, if I understand you correctly, the short answer is that all attributes
> are detached except for pin attributes, which are attached to the pin.  That
> seems logical.  I was thinking along the lines of all attributes are
Yes. For a component (that is, for a symbol added on schematic) the
detached attributes being in the symbol are promoted and become attached
to the component.

> "attached" to the symbol, not "attached" to the pin in the symbol.  Now I
> see the error of my thinking.
> 
> Is it possible to edit the pin number attribute value after symbol
> instantiation?
Short answer: yes.
Long answer: I know at least two possibilities, one is using the slot=
attribute, which is simple, and second is using of scripts, which is
powerful and can be used for changing not only pinnumbers.

> Example: I would like to create a generic symbol whose part has insulated
> wire leads of arbitrary colors.  It would be nice to create a single symbol
> with placeholder pin numbers which can be changed to the wire color after
> instantiation.  Yes, I suppose I could hand edit the schematic file, but
> that is crude.
See the symbol attached. Add it to schematic and change its slot number.
I've intentionally made all slot related attributes visible.

Cheers,
  Vladimir

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