I couldn't understand meaning of the line- "A macro variable is like a standard data variable except that it does not belong to a data set and has only a single value which is always character. The value of a macro variable could be a variable name, a numeral, or any text you want substituted in your program. " At one side, it is saying that macro variable has only a single value which is always a character and on the other side it is saying that value of macro variable can be a name or numeral. Isn't it a contradiction? Please explain. I found the above line in 'SAS Macro Programming for Beginners' pdf ("http://www2.sas.com/proceedings/sugi29/243-29.pdf")
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