The TYPE command allows you to view a line or range of lines
    in your source code. The lines are displayed on the terminal
    screen. To use the TYPE command, you may have to establish a
    source directory search list with the SET SOURCE command.

    Modname without any line numbers will display the first line.
    If you provide only one line number, the corresponding line of
    source code with its line number is displayed. Also, because
    the default line number is the number for the line following the
    last line displayed, you can display the next line by issuing the
    TYPE command without a line number and then pressing the RETURN
    key. By repeating this sequence, you can read through your source
    program one line at a time.