The CAPTURE command is used to enable or disable the capture
to disk file of incoming and outgoing traffic.
When capture is enabled, anything which is displayed in the
central window of an XRPi console is also written to disk.
This includes session activity and TRACE'd data. Whereas the
screen display is filtered to prevent it being garbled by
binary data, the capture is pure binary, so it is useful for
diagnostics.
The optional argument may be "ON" or "OFF". If no argument is
supplied, the current setting is reported.
This command overrides the <F5> (toggle capture) key.
There is a seperate capture file for each XRPi "console",
named CAPTURnn.TXT where nn represents the console number (01
to 05).
Capture is fully independent on each console, and consoles may
be captured concurrently. Switching between consoles, or
scrolling consoles back, does not affect the capture.