HOW TO ENTER PROGRAMS Line numbers are required for YOUR benefit in editing a program (but are irrelevant to a RUNNING program). Thus line numbers usually are omitted when listing a COMAL program. It is up to YOU to provide the line numbers. Of course, COMAL CAN DO IT FOR YOU. Follow these steps to enter a COMAL program: 1) Enter command: NEW 2) Enter command: AUTO 3) Type in the program. 4) When done, stop the AUTO mode: Press the key You may use both UPPER and lower case letters while entering a program. COMAL automatically makes keywords UPPER case and variable names lower case. You don't have to type leading spaces in a line. They are listed only to emphasize structures, and COMAL will insert them for you. You DO have to type a space between keywords in the program. Variable names, procedure names, and function names can be a combination of: abcdefghijklmnopqrstuvwxyz0123456789'_][\