No preflash is applied to bias frames even if the camera is configured with a non-zero length of preflash.
A title may be given for the observation: the title appears as the datum of the OBJECT keyword in the FITS headers and as the target name in the observing log. If no title is given, the runs are titled "Bias frame".
bias [<camera>] ["<title>"]
multbias [<camera>] <n-obs> ["<title>"]where n-obs is the number of biases to be taken. The title-string must be enclosed in double quotes.