The \NCS\ supports the following ``Observing Modes'':
\command{CALIBRATE},
\command{POINTING},
\command{FOCUS},
\command{TIP},
\command{ONOFF},
\command{OTFMAP},
\tbdfrom \command{RASTER} not yet implemented \tbdto,
\command{TRACK},
\command{VLBI}.

All Observing Modes are realized by executing a sequence of 1 or more subscans. 
In most cases, the antenna moves between or during the subscans.

The observing modes are mutually exclusive, i.e., at any time
the system executes only one of them.

Several Observing Modes can be combined with different Switching Modes, 
e.g., \command{OTFMAP} with \total, \sww\ (for bolometer), or \swf.
The Switching Mode should normally be specified before the Observing
Mode.
