use of '+' '-' command prefixes?

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use of '+' '-' command prefixes?

From:	gk
Subject:	use of '+' '-' command prefixes?
Date:	Mon, 25 Nov 2002 21:36:48 -0800

I understand use of '@' command prefix and it is well documented in the manual
But I could not find any explanation of '+' and '-' command prefixes.

- Greg Keraunen

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use of '+' '-' command prefixes?, gk <=
- Re: use of '+' '-' command prefixes?, Paul D. Smith, 2002/11/26
- RE: use of '+' '-' command prefixes?, Eitan Rabin, 2002/11/26

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