ETM33 PSU 400Watt -11 is a software package designed to provide RT-11, RSX-11M, RSX- 11M-ETM33 PSU 400Watt , and ETM33 PSU 400Watt /E applications programmers access to the plotting capa- bilities of Digital's LXY12 graphics lineprinter. Using the PLXY-11 graphics subroutines, programmers can create software that prints out representations of data in graphs and charts with clear alphanumeric labeling. This makes ETM33 PSU 400Watt -11 useful for equipping scientific, engineering, statistical, and econo- metric application programs with graphics. To use PLXY-11, the programmer writes FORTRAN programs that call the appropriate subroutines in the ETM33 PSU 400Watt -11 library. These subroutines convert the program's graphics requests into a series of vectors stored in an intermediate file. This file is submitted to the ETM33 PSU 400Watt -11 postprocessing task, which converts its vector data into raster format suitable to the ETM33 PSU 400Watt graphics lineprinter. The user then transfers this converted file to the graphics printer via a standard file transfer utility such as PETM33 PSU 400WattIP, where it is printed out by the system LP11 line- printer driver. ETM33 PSU 400Watt is shipped with the ETM33 PSU 400Watt graphics lineprinter and must be specified when ordering hardware.