1INCLAN: do - unconditional or Fortran-77 do-loops

Usage: do [<variable> <start> <end> [<step>]] [parallel [continue]]
         .
         .
       end do

The statement "do" executes a loop within a macro. Without parameters
the loop is executed unconditionally, i.e. until one of the statements
break, exit, quit or return is encountered. "do" followed by parameters
executes a FORTRAN-77 do-loop within a macro. The loop counter
variable and the integer expressions start, end, and step have the
usual meaning. Parallel loops are executed in parallel on nproc
processors (see variable nproc). If the keyword "continue" is
present, the program continues immediately with the execution of the
next statement after the parallel loop. Otherwise, the next statement
after the loop is executed when the parallel loop is finished.


Examples: do
            if (filename.eq.' ') break
            .
            .
          end do

          do i 1 10
            print "Iteration $i."
          end do
