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Date:	Fri, 29 Jul 2016 10:41:52 -0400
Message-Id:	<201607291441.u6TEfqwR013670@envy.delorie.com>
From:	DJ Delorie <dj AT delorie DOT com>
To:	geda-help AT delorie DOT com
In-reply-to:	<20160729105443.7008f31e@debian> (geda-help@delorie.com)
Subject:	Re: [geda-help] pcb: blind via
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	<20160728174027 DOT 453b2b41 AT debian DOT olsr>
	<20160728192015 DOT 4fc84ce8 AT debian DOT olsr>
	<201607282248 DOT u6SMmTxw006065 AT envy DOT delorie DOT com> <20160729105443 DOT 7008f31e AT debian>
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> 1. You can use the Thrm button for rotate the parameter.
> 2. May be, you change this attribute in circle with the THRM-Form.
> 1. If it is possible, we should it make backward compatible.
> 2. We need a option per via tho disable several layers.

I mean, can you have a via between *any* two layers, or just specific
layers according to how the fab builds the board?  Can you stack blind
vias over each other?  If so, how does the user know which via is
selected?

It's one thing to say "we'll use a tool", it's another to think
through *how* we'll use the tool, and if that covers all the things we
need.

> > * What about DRC, optimizers, autorouters, and exporters?  Do they
> >   need changes to handle them?
> 
> This is the only real problem (: and hard work.
> How do you serve the Info for:
>  DRC,
>  autorouter,
>  Lookup Connection.

Most of DRC is in find.c

autorouter is in autoroute.c

lookup connection is also find.c

Probably also need to worry about crosshair.c (for auto-drc) and djopt
(optimizer).

And, obviously, draw.c and the exporters :-)

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