Thanks Ian, for the additional clarification. I don't usually use them but
before I posted I did a quick open a PCB database and looked at the menu,
didn't look far enough down so I missed the Place Keepout command. I guess
Ian answered your query Frank?

Brad Velander,
Lead PCB Designer,
Norsat International Inc.,
#300 - 4401 Still Creek Dr.,
Burnaby, B.C., V5C 6G9.
Tel. (604) 292-9089 direct
Fax (604) 292-9010
website www.norsat.com


> -----Original Message-----
> From: Ian Wilson [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, August 21, 2001 4:19 PM
> To: Protel EDA Forum
> Subject: [PEDA] Layer Specific Keepouts (Ex: Customize layer pairs)
> 
> 
> Frank,
> 
> Layer Specific Keepouts (LSK) were implemented in P99SE.
> 
> You can place layer specific keepouts with arcs, tracks and 
> fills.  You can 
> place LSKs either as Brad showed (place track and edit the keepout 
> property) or there is a Place|Keep Out menu item (on the 
> Place menu) which 
> gives various options.
> 
> LSKs are observed (mostly) by the auto-router and checked by the 
> DRC.  Hence they are not only useful with the autorouter but 
> in any design 
> where critical spacings and special regions must be observed.
> 
> LSKs take the colour of the layer they are on but have a 
> highlight in the 
> keepout colour.
> 
> They we one of the huge improvements in P99SE that seemed to 
> coincide with 
> an organised effort by some members of this group to collate 
> and document 
> what we wanted.  Almost all of our wish list was implemented.
> 
> Ian Wilson

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