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Date:	Thu, 22 Oct 2015 13:36:35 +0200
From:	"Gabriel Paubert (paubert AT iram DOT es) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Subject:	Re: [geda-user] A lesson from gnet-makefile
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On Thu, Oct 22, 2015 at 12:19:32PM +0200, Kai-Martin Knaak wrote:
> Nicklas Karlsson  wrote:
> 
> > Yes, only problem with star ground symbol in gschem is how many pins
> > it should have. In pcb for many cases it would make sense with one
> > common connection point.
> > 
> Last time this topic surfaced on the mailing list the most practical 
> suggestion was to exploit a pecularity of text in copper: 
> The connection check of geda-pcb completely ignores letters. Insert a 
> large "-" and make regular tracks overlap with the character but not 
> connect to each other.
> 
> This is of course an abuse of a missing feature (connection check of 
> strings in copper) which might break if/when somebody takes the time 
> to fix it. But at least it works now. 
> 
> And it gives a hint for a second best solution: Add a tag "ignore-for-
> connection-check" which can be attached to a track segment. This would 
> of course also not check for unwanted connections to the tagged 
> segment. But since it is an explicit localized exception, the risk is 
> manageable. After all, we live with not connection checked text all 
> the time...

Indeed, having "non-conductive copper" is probably the best solution, it
also allows to build some RF structures like directional couplers.

    Gabriel

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