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Control code An ASCII code that tells the computer to perform a particular function, such as a
carriage return.
Control panel reset A reset or factory reset performed using the printer control panel.
Cross-hatching A method of shading using perpendicular diagonal lines that cross one another.
Current units The current unit type in use in HP-GL and HP-GL/2 mode. Current units are either
user units or graphics units depending on whether an SC command has been used.
Cursor Although the printer does not have a cursor, it is sometimes easier to visualize the
printer's operation in terms of a cursor that can be moved from place to place on
the page.
Cursor position The current position of the imaginary cursor.
Decipoint A unit of measure equal to 1/720".
Default conditions A set of HP-GL and HP-GL/2 mode settings that you restore using the DF;
command. The default conditions are a subset of the initial settings.
Destination image The graphic image that is already in place on a page and to which the source image
is applied in the LaserJet series print model.
Dots A unit of measure equal to 1/600", the smallest increment that the cursor can
move.
Downloadable font A character font that can be downloaded from your computer to the printer. You
can either buy Downloadable fonts or create your own. A downloadable font
consists of a font descriptor block followed by a character code, character
descriptor block and the data for each character in the font.
Downloading The process of sending either a font, a macro or a graphic image from your
computer to the printer.
Effective window The area of the page on which HP-GL and HP-GL/2 output can appear. The
effective window is determined by the overlap of the logical page, the PCL picture
frame, the hard clip and the soft clip limits.
Emulation mode A mode of operation in which the printer imitates the functions of a different model.
Enabling a macro for overlay
A macro that is enabled for overlay runs as the final operation before each page is
printed, using the macro overlay environment printer settings.
Escape sequence The Esc character followed by a string of other characters that tell the printer
which operation to perform.
Factory default environment The collection of printer settings that have been made to the printer before it leaves
the factory. You can reset the printer to the factory settings either by using a
printer command or using the control panel.
Factory reset A reset in which LaserJet mode is made the current emulation mode and the
factory default environment is restored.