This is an example of how to use the LIST command:
1 REM MYPROGRAM COPYRIGHT ME Inc. 2008
1 REM While debugging a port may be left open
5 CLOSE ALL
1 rem Open the ports this program will use
10 OPEN #0: NAME: "SER" ! Restart the console
20 PRINT #0: "Hello World"
LIST
1 REM Open the ports this program will use
5 CLOSE ALL
10 OPEN #0: NAME: "SER" ! Restart the console
20 PRINT #0: "Hello World"
LIST 1
1 REM Open the ports this program will use
LIST 5-10
5 CLOSE ALL
10 OPEN #0: NAME: "SER" ! Restart the console