Description: Writing this object to a value other than eNotPrintingAnInternalPage causes the device to attempt to print an internally generated page. Reading this object provides an indication what internally generated page is currently being printed, if any. The actual page is device specific. Some devices may support continuously printing an internally generated page. Setting this object to eNotPrintingAnInternalPage terminates continuously printing internally generated pages. An internally generated page may not be allowed to be printed at any arbitrary time; under what conditions it will succeed or fail is device specific. If the device supports the requested page, but can not start printing the page when requested, the device will respond with . RECOMMENDATION: If the device is ready (i.e. the NOT- READY-PRINTER object does not contain any items, except maybe being off-line) and is idle (i.e. the NOT-IDLE object does not contain any items), this request should always succeed. This provides a mechanism for driver writers to always determine if the action will succeed or not. Additional information: eDeviceDemoPage2 is the printer demo page. ePCLFontList1 is the PCL typeface list. eDeviceDemoPage5ErrorLog is the printer's error log. LaserJet 5Si does not support continuously printing a demo page. The value eDeviceDemoPage6FileSystemDirectoryListing can only be set when the disk option is installed; values ePostScriptDemoPage1ConfigurationPage and ePostScriptFontList1 can be set only when PostScript is installed. Attempting to set these values without the proper option installed will result in a status of being returned. The printer must be idle before it will print an internal page. The best method to assure that the printer is idle is to set the object ON-OFF-LINE to eOfflineAtEndOfJob, wait for the printer to be offline and then print the internal page. The printer will put itself online to print the page. When this object is set to a valid value and the printer is idle, the status returned is and the value returned is ePrintingAnUnknownInternalPage. If the printer is not idle (whether printing an external job, printing an internal page or executing a self test), a status of status will be returned with a value of eNotPrintingAnInternalPage. Setting this object to a valid value causes the desired page to be formatted and put in the printer's print queue. While the page is being formatted a get on this object will return the value ePrintingAnUnknownInternalPage, if the time to format the page is long enough (it is currently estimated that the time to format some pages is as short as one millisecond). Attempting to set this object before the page has completed being formatted and printed will cause status to be returned with a value of eNotPrintingAnInternalPage. After the page is in the queue, a get on this object will return a value of eNotPrintingAnInternalPage. Setting this object to cause another page to be printed before the first page has completed results in a status of status with a value of eNotPrintingAnInternalPage. Likewise, if the SELF-TEST object is set to eNonDestructiveSelfTest and that page has not printed when this object is set to print a page, a status of status with a value of eNotPrintingAnInternalPage will be returned until the self test page has printed.