Help on control keys

[Ya Yan Lu]

Hi, netters,

     I am concerning the following program.  Is it possible to put some
control characters in an ascii file, so that whenever I read that file 
by cat or more, it actually runs a program? When cat or more are used, the 
control keys in a file usually have some effect, but I am not so clear 
what they really are.
     Thanks for any help.

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				Ya Yan Lu
				Department of Mathematics
				Harvard University, MA 02138
				yylu at zariski.harvard.edu
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