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PLT Command summary
| CLear | Immediately clear the graphics device |
| COlor | Change the default colour index |
| CONtour | Produce a contour plot |
| CPD | Change the plotting device |
| CQuit | Clear the graphics device and return control to XSPEC |
| CSize | Change the default character size |
| Error | Control whether errors are displayed and used in fitting |
| EXit | Exit PLT and return control to XSPEC |
| Fit | Fit the PLT model to the data |
| FNy | Evaluate the model at the specified location |
| FOnt | Change the default text font |
| Freeze | Freeze a parameter value |
| GAp | Change the default gap size between the data and the edge |
| Grid | Control the location of the major and minor tic marks |
| Hardcopy | Make a file that can later be printed |
| HElp | Obtain help on any PLT command |
| Imodel | Numerically integrate the model over specified range |
| LAbel | Add or remove labels from the plot |
| LIne | Control whether a line is used to connect data points |
| LOg | Control whether data is plotted using a log10 scale |
| LStyle | Change the default style of the line connecting the data points |
| LWidth | Change the default line width |
| MArker | Control whether the data points are plotted with markers |
| MOdel | Define a PLT model |
| Newpar | Change a parameter value associated with the model |
| PLot | Immediately re-plot the data |
| PRompt | Change the PLT prompt |
| Rescale | Reset the minimum and maximum plot range |
| SCr | Change the color representation of the specified color index |
| SHow | 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 |
| VErsion | Display date of the most recent modification to PLT |
| 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 |
| Xaxis | Define the method used to calculate the x-variable |
| Yaxis | Define the y-axis scale for a contour plot |
| $ | Execute operating system commands |
| @filename | Read commands from a PLT command (.pco) file |