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List of symbols

• To: mathgroup at smc.vnet.net
• Subject: [mg24382] List of symbols
• From: sch at mitre.org (Stu Schaffner)
• Date: Wed, 12 Jul 2000 23:13:22 -0400 (EDT)
• Organization: The MITRE Corporation
• Sender: owner-wri-mathgroup at wolfram.com

I at times use a command of the form ?pattern; to see what symbols
have been defined, especially by a << operation to read in data.
Usually this works well, but sometimes for no apparent special reason
this command first lists the symbol names and then their values.
Since I am looking for symbols whose values are very large data sets,
this locks up the notebook process as it tries to format the data set.

I have three questions.  First, is there a better way to generate a
list of all symbols that match a pattern?  Second, why does ?
sometimes print the symbol values and other times not print them?
Third, is there any way on MS Windows other than CTRL+ALT+DEL to
convince a Mathematica front end process that you really don't want to
see the 500 pages of numbers it is patiently formatting for you?

Stu Schaffner, the MITRE Corp.