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From: Hyman Rosen <hymie@prolifics.com>
Subject: Re: What is a Display ? (was: Subverting 'Access for Sub-programs)
Date: 1999/08/05
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kilgallen@eisner.decus.org (Larry Kilgallen) writes:
> What is a Display ?

A display is an array of frame pointers. It is as large as the static
nesting depth of the most deeply nested procedure of the program. Each
frame pointer in the display points to the stack frame of the most
recently called procedure at the static nesting depth of its
index. Its use allows local variables in enclosing procedures to be
accessed with a single extra indirection, as opposed to static links
which require chaining backwards for each level. Since such access
tends to be rare, static links are probably better.