ROSC is the signal generators clock source, either the internal oscillator, or I would imagine aux port on the SAG1021,
Waveform is the command to export a raw export of a given channel, I am working with EEZstudio to make it directly export to CSV, in reality there is no reason why the webserver could not do this either.
SWWV is one of the operating mode of the signal generator option, in reality the devices bode plot works off BSWV (BasicWave), sets the frequency, measures then sets the next.
What i was after was a command that would put it in a bode plot mode with the parameters exposed so I could set the center, span, etc via scpi,