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     The Trace (T) command executes the current source line if the
     active Source window is in Source mode, or executes the current
     instruction if the active Source window is in Assembly or Mixed
     mode. The current source line or instruction is the one pointed to
     by the CS and IP registers.
 
     If <count> is specified, the command executes <count> lines or
     instructions before stopping.
 
     Source Mode
 
     In Source mode, the Trace command traces only into functions that
     have source code. For example, if the current line contains a call
     to a standard C library function, the debugger simply executes
     this function, since the source code for the function is not
     available. In the protected-mode version of CodeView (CVP), other
     threads run concurrently with the current thread (equivalent to
     the ~*T command).
 
     Assembly/Mixed Mode
 
     In Assembly or Mixed mode, CodeView always traces into functions.
     If the current instruction is CALL or INT, the debugger executes
     the first instruction of the procedure or interrupt. If the
     current instruction is REP, the debugger executes one iteration of
     the repeated string sequence. In the protected-mode version of
     CodeView (CVP), other threads are frozen (equivalent to the ~.P
     command).
 
     CodeView does not execute the first instruction of INT 21H
     interrupts; there is no direct way to trace into DOS function
     calls.
 
     See: ◄Use with Thread Command (~)►
          ◄Process (|) Command-Window Command►
          ◄Source Display Mode (S) Command-Window Command►
          ◄Options Menu: Source-Window Command►
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