### Synchronous

Synchronous radio button in PM debugging mode dialog

Note: This section applies to OS/2 only.

When the debugger is operating in synchronous mode, the messages that are passed between PM applications are answered by their target applications in the order that they were created. The messages that are passed within the debugger take priority over any other messages that are passed in the system. When the program being debugged is stopped and the debugger is in synchronous mode, other PM applications are locked, leaving the debugger free to operate. In synchronous mode, you will not be able to use any other PM applications that are running.