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From: hardin@hpindda.HP.COM (John Hardin)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Environment Space on DOS 3.1 and higher
Message-ID: <4330005@hpindda.HP.COM>
Date: Thu, 8-Oct-87 19:29:25 EDT
Article-I.D.: hpindda.4330005
Posted: Thu Oct  8 19:29:25 1987
Date-Received: Thu, 15-Oct-87 03:03:48 EDT
References: <195@sidd.SanDiego.NCR.COM>
Organization: Hewlett Packard, Cupertino
Lines: 12

The environment space on DOS 3.2 may be set in the CONFIG.SYS file
by specifying SHELL=COMMAND.COM/E:xxxx where xxxx represents the
bytes of environment space as a decimal integer in the range of
160 to 32768.  I'm taking this right out of the PC DOS 3.2
reference manual (page 4-34).

PC Magazine had a discussion of this a few months ago in their
PRODUCTIVITY section in the back.  The /e: option on the shell 
command works for DOS 3.1, too, but it indicates a number of
blocks of environment space rather than the number of bytes.
I forget the block size, but I think it was on the order of
magnitude of 100 bytes/block.