Introduction    Printer
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 GetPrinter()    Gets printer state
 IsPrint()       Determines if print is load
 pAddFile()      Adds a file to the print files'queue
 pDelAll()       Deletes all the Print files'queue
 pDelFile()      Deletes a the Print files'queue
 pError()        Indicates if the queue of Print is stop by any mistake
 pRestart()      Restarts the Print's queue
 PrtScr()        Prints the current screen
 ToPrint()       Prints a string on the Printer