Fit measure

tv$>$ fit measure activate {dy-$\chi$² $|$ y-$\chi$² $|$ poisson}
Activates the selected measure function (see section D.3 p. ).

tv$>$ fit measure definition {dy-$\chi$² $|$ y-$\chi$² $|$ poisson}
Prints the definition for the measure function (see section D.3 p. ).