Geoff Chappell - Software Analyst
/vdnumber
The required argument consists of whatever follows immediately within the same command-line token, provided that it does not begin with a hyphen or forward slash.
The argument is formally numeric. Values other than 0 and 1 are coerced to 1, with a warning (D4014).
The /vd option overrides earlier instances of itself (and is overridden by later instances).