Task

Produce a formatted   12×12   multiplication table of the kind memorized by rote when in primary (or elementary) school.



Only print the top half triangle of products.




      @% = 5 : REM Set column width
      FOR row% = 1 TO 12
        PRINT row% TAB(row% * @%) ;
        FOR col% = row% TO 12
          PRINT row% * col% ;
        NEXT col%
        PRINT
      NEXT row%