Altd documentation
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This is a machine language version of the seven level alternate stack display
routine. It more closely emulates the default format in that the stack margin is
justified.

When used in conjuction with vectored ENTER the display remains in its seven
level format.  A brief reiteration of how this is done is as follows:

i)  Store << DROP ALTD >> in <beta>ENTER

ii) Set flags -62 and -63.

Rick Grevelle
