The instruction below is not correct.
A primary or outer plane CAN completely enclose any number of secondary planes, 
it is secondary planes that must not enclose any other secondary planes. The 
example diagram in the manual is a little misleading in that it doesn't specifically
show the outermost plane. Read the caption carefully. (P.571 in 99 manual)

Dave Sanders

-----Original Message-----
From: Brian Sherer [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 11, 2002 6:28 AM
To: Protel EDA Forum
Subject: Re: [PEDA] Internal plane problems

<snip>
Also note that the Primary Plane must not be "closed", or completely
enclosing any Secondary Plane. You must "break" the margin of the
Primary Plane toward the edge of the board to create a gap in the
Primary Plane for each Secondary Plane. Protel's Help system has an
example, I believe. Check Plane current density and signal layer paths to 
determine the best place to create these gaps.
<snip>
Brian

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