The relative file name to hold the text config. The
CVX file system uses drive C: to refer to the bottom
flash card, and D: to refer to the top flash card. If
the drive letter is not specified, then C: is assumed.
If this file exists, it will only be overwritten with
a complete copy of the output from this action. NOTE
that the file CONFIG.CVX is not accessible through
this action. To save the config to flash where it will
be used at the next reboot, use the flashSave action
instead.