Invoking the print button will send the postscript page to the printer using the print command given. The "Save" button will save the postscript in the file given in the entry labeled "File".
The entries labeled "X" and "Y" specify the x and y coordinates of the left top edge of the area of the original that is to be printed. If the "Scaled XY" button is checked, the coordinates given apply to the scaled original. Together with the (non automatic) scale these can eg. be used to print something on several pages.
"Page X" and "Page Y" determine the positioning point on the printed paper and must be values followed by c for centimeters, i for inches, m for millimeters, or p or nothing for printer's points (1/72 inch). The buttons above the entry determine what part of the drawing will be positioned on the positioning point.