Display the values of PLT internal variables. SKip Control how PLT divides data into vectors. STatistics Compute various statistical properties of the data. THaw Allow a parameter value to vary during a fit. Time Control whether the time stamp is plotted.
Uncertainty Compute the uncertainty in a parameter value.
Viewport Control the size of the viewport plotting area. WData Write a QDP data file to disk. WEnviron Write both QDP data and header files to disk. WHead Write a QDP header file to disk. WModel Write a model file to disk.