Go to the previous , next section. ... Define the plot device you want to use with the device command. ... Declare the data file with the data command, see section How should I get data into SM? , or you could see section 'Data' in The SM Manual . ... If you want to plot points, you should first define the point style with the ptype command. ptype allows you to define the point as a type of polygon, with any number of sides, and 4 basic forms (see section 'Ptype' in The SM Manual ). ...