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Program Step (Use with Thread Command)
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     When used with the Thread command
 
          ~threadP
 
     the Program Step (P) command executes a program step for the
     specified thread.
 
     If you specify a particular thread, the debugger executes one
     source line or instruction of the thread. All other threads are
     temporarily frozen.
 
     This version of the Thread command does not change the current
     thread. Therefore, if you specify a thread other than the current
     thread, you do not see immediate results. However, the
     subsequent behavior of the current thread may be affected.
 
     The command ~*P is a special case. It is legal only in Source
     mode, and causes the debugger to step to the next source line
     while allowing all other threads to run (except for frozen
     threads). Only the current thread executes in the debugger
     display.
 
     See: Thread (~) Command-Window Command
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