On Saturday, January 17, 2004, at 02:55 PM, Alejandro Tejada wrote:
But I do not understand how these commands or functions works on the data: dup store exch mat sub.
any dup any any Duplicates the top of the stack. Example /double {dup +} def
key value store Replace value of key in dictionary with new value.
any1 any2 exch any2 any1 Exchanges top two elements.
mat This is not part of PostScript, but is defined in the source.
num1 num2 sub dif
Removes top two items from the stack and puts the difference onto the stack.
You can get the "red book" online from Amazon. Title: "PostScript Language Reference"
You might find online references or tutorials.
Dar Scott
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