The debugger lets you observe and manipulate your program interactively as it executes. The VMS Debugger has an on-line HELP facility to help you during your debugging session. It also allows you to display your source code and even invoke the editor from within the debugger. Moreover, you can record the commands you enter during a session and the debugger responses to those commands in the log file. You can then use log files to keep debugging track of your debugging efforts, or you can use them as command procedures in subsequent debugging sessions.
File extensions are optional.
When you see this prompt, you are in the debugger. A debugger log file is a file containing every debugger command you issue during a particular debugging session, together with a display of the debugger's responses to those commands. The following is a list of parameters. Displays debugger output at the terminal. Including this parameter causes debugger not only to display the results of executing each command in the command procedure, but also the commands that caused execution.