Contents of file named dofrom

* Contents of macro file "dofrom"
setbb fib 1.0 prefib 0
do i from 0 to 10            ;* Loop macro variable value is i
   message "Fibonacci number $i$ is (BEFORE . %fib%)"
   setbb newfib (%fib% + %prefib%)     ;* Next Fibonacci num
   setbb prefib %fib% fib %newfib%     ;* Remember previous two
enddo