OTFMODE Type: Adverb (Logical, > 0 => true) Use: Specifies that data were taken in the on-the-fly mode Null value: 0 (false) Tasks: HOLIS.........Prints information about holography sampling. HOLOG.........Read & process holography visibility data to telescope images. UVHOL.........Prints holography data from a UV data base with calibration.