1mNAME0m
       incr - Increment the value of a variable

1mSYNOPSIS0m
       1mincr 4m22mvarName24m ?4mincrement24m?


1mDESCRIPTION0m
       Increments the value stored in the variable whose name is 4mvarName24m.  The
       value of the variable must be an integer.   If  4mincrement24m  is  supplied
       then  its  value  (which  must  be an integer) is added to the value of
       variable 4mvarName24m;  otherwise 1 is added to 4mvarName24m.  The new  value  is
       stored  as  a  decimal  string in variable 4mvarName24m and also returned as
       result.


1mSEE ALSO0m
       expr(n)


1mKEYWORDS0m
