@ShortDescription
Output a constant DC signal

@ParamDescription(cnst)
/* Constant */
The value of the output signal.

@Description
#name generates a constant DC signal with the value specified by #param(cnst). This is useful for generating a
constant signal to be used as a control signal to be used as an input for other processing blocks such as
#pi(MHL ,mMlt), #pi(MHL ,csvf), #pi(MHL ,mmax), #pi(MHL ,mmin) and #pi(MHL ,msel).
