1 01/25/82  Standard subsystem request:  debug_mode
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 3 Syntax:  debug_mode -control_arg
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 6 Function:  enables or disables debugging mode for the current subsystem.
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 9 Control arguments:
10 -on
11    enables debugging mode for this subsystem.  (Default)
12 -off
13    disables debugging mode for this subsystem.
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16 Notes:
17 This request is intended for use only by subsystem implementors.
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19 When debugging mode is enabled, all calls to abort the subsystem or a
20 request line will instead establish a new Multics command level.  In
21 addition, all areas obtained on behalf of the subsystem will have the
22 freeing operation disabled.