Macro overlay environment; Modified print environment; PCL addressable area- Page 8

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Isotropic scaling

A form of image scaling using the SC command in HP-GL or HP-GL/2 mode in 
which the user units must be of equal size.  Hence it may not be possible to use the 
entire graphics window to display the image. 

Justification

The way in which text is aligned.  For example, left justification involves aligning the 
left end of every line of text. 

Label

A text string that forms part of an HP-GL and HP-GL/2 plot. 

Landscape

The orientation in which the top edge of the page is longer than the side edges. 

Logical page

The area of the physical page on which the cursor can be positioned in LaserJet 
mode.  You can use PCL commands to specify the position of the logical page on 
the physical page.  Also known as the PCL addressable area. 

LSB

i) The least significant byte of a set of data bytes. 

ii) The least significant bit of a single byte of data. 

Macro

A sequence of PCL commands that can be stored in the printer memory.  To run 
the sequence you need only use a single PCL command. 

Macro execution

Executing a macro is a way of running a macro whereby any changes made to the 
modified print environment by the macro are retained when macro execution has 
been completed. 

Macro overlay environment

  Used only by a macro that has been enabled for overlay.  A combination of the 

user default environment and the modified print environment. 

Medium

The line thickness of normal type. 

Modified print environment

  The collection of all current LaserJet printer settings.  This environment is saved if 

you call a macro or enter HP-GL and HP-GL/2 mode,  it is  restored when the 
macro has finished running or when you quit HP-GL or HP-GL/2 mode. 

Monospacing

Some bitmap fonts are printed with each character occupying the same space on a 
line of text.  This is known as monospacing. 

MSB

i) The most significant byte of a set of data bytes. 

ii) The most significant bit of a single byte of data. 

Pattern

i) The hatching or cross-hatching that can be applied to an outline shape. 

ii) The non-white areas of the source image in the LaserJet print model. 

Pattern transparency

The patterned ( non-white ) areas of the source image are either transparent,  in 
which case the destination image is visible through the white parts of the pattern,  or 
opaque,  in which case the destination image is not visible at all throughout the 
patterned areas of the source image. 

PCL

Printer Control Language.  The language consisting of escape sequences that is 
used to control the printer in LaserJet mode 

PCL addressable area

 See logical page. 

PCL picture frame

See picture frame.