Xerox 6180N Using LCDS Print Description Language - Page 431

Using PDL commands for graphics Error handling for graphics Use the ABNORMAL ERROR parameter to specify how the system will handle error conditions involving graphics. If you specified ABNORMAL ERROR=STOP in the JSL, the DP 2000 Series EPS systems do the following when they encounter an image that is off the page: • Display an error message. • Partially print the image. • Give the operator the option to abort the job or to continue printing and have the error added to the log. Graphic processing modes A graphic is handled by the software in one of the following four modes: • Random mode (Move mode) • Block mode • Batch mode You select the mode depending upon how the graphic is made available for report processing, as well as your performance requirements and disk resources. Random or Move mode In Random mode (also called Move mode), a graphic is obtained from a named disk file. The file must already exist at the start of report processing or must be read from the input data stream before the first record of the report text is processed. In the latter case, each graphic is written to the disk as a permanent image file. In Random mode, the output software reads the various graphics for a page from their individual files. Block mode In Block mode, a graphic is obtained from the input data stream immediately following the textual data to be imaged on the same page. Separate graphic disk files are not created. A given page of a report that includes Block mode graphics may also include either Random or Move mode graphics. Using LCDS Print Description Language 6-3