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Date: Sat, 24 Mar 2012 20:56:24 -0400
Message-Id: <201203250056.q2P0uORL001356@envy.delorie.com>
From: DJ Delorie <dj AT delorie DOT com>
To: geda-user AT delorie DOT com
In-reply-to: <4F6E6972.9030909@innocent.com> (message from Gus Fantanas on
	Sat, 24 Mar 2012 20:40:18 -0400)
Subject: Re: Two Questions on Footprints  (WAS:  Re: [geda-user] Solder paste/nopaste
 flag overlapping, and custom paste apertures)
References: <20120323153154 DOT 31f9090d AT svelte> <201203232307 DOT q2NN7qL4011010 AT envy DOT delorie DOT com> <4F6E6972 DOT 9030909 AT innocent DOT com>
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> --I've always had trouble understanding the function of the 'edge2' 
> flag. The geda wiki (2007 edition) says that for pads it means that the 
> side in question is close to the edge. What edge?

It's used to figure out which way to print pin names/numbers in pcb
when you ask for them to be displayed, that's all.

> Also, what is the significance of "EP" above? It occupies the slot 
> reserved for the pin number if I read the syntax correctly. It cannot be 
> anything because the netlist will reference it$or am I wrong?

It's just a mnemonic name: EP == exposed pad

Pin "numbers" can be non-numeric.  The difference between names and
numbers, is that importing a schematic will overwrite the names based
on the corresponding pinlabels in the schematic.  But the netlister
can handle pin *numbers* like A4 as BGAs use that numbering pattern.