st: using variable list instead of listing all variables?

[Shuaizhang Feng <fengsz@yahoo.com>]

Dear all:

I have a simple question.  In a regression command
like "reg", if I do not want to list all the variables
but just use an abbreviation, how should I do it. For
example, 

reg a b1 b2 b3 c

can I do something like reg a all_b_s c

Thank you.

Shuaizhang

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