In this case, the parse submenu. The first piece of information required by most WXP programs is a data file to parse, plot or contour. Once the data has been parsed, the program will exit and return to the WXP shell and display the parse menu again. Most of WXP is done this way to provide a consistent interface into the data. It would be impossible to plot all the stations in the US or the world, so it is desirable to view data over small regions.
Lets select a temperature plot.
If you have a postscript printer setup on your system, you could now print the map. For the most part, you will be wanting to view the data on your screen. At this point, a window will pop up on your display and the data will plot. In most cases a map will draw in red, then the data in green and finally a white box will draw around the plot and then labels will print above the plot. The text labels include the variable and its units in the upper left and the time of the data in the upper right.