Instrument-control Toolkit - pp_ctrl
- Loadable Function: pp_ctrl 
(parallel, ctrl) - Loadable Function: 
c =pp_ctrl(parallel) -  
Sets or Read the Control lines.
Inputs
parallel - instance of octave_parallel class.
ctrl - control parameter to be set of type Byte.Outputs
If ctrl parameter is omitted, the pp_ctrl() shall return current Control lines state as the result c.