Editing Interpress (section)

==Functional Sets==

Interpress is so extensive, some printer manufacturers may prefer to support only a part of it, perhaps to reduce development time and cost or to improve performance. To prevent inconsistencies, Interpress defines three standard function sets:{{sfn|Harrington|Buckley|1988|page=411}}

; Commercial Set
: designed for text and form-printing applications, such as might be required in a data center using basic text or scanned images.

; Publication Set
: includes all the Commercial Set plus curved lines, filled outlines, rectangular clipping, synthetic graphics, and gray-level color capabilities.

; Professional Graphics Set
: consist of all of the imaging facilities (types, literals, and operators of the base language), full-color encoding, and Printing Instructions (which were expanded by Ernest L. Legg)

{| class="wikitable"
|-
! Interpress sets  !! Commercial !! Publication !! Professional Graphics
|-
! Text
| 90° rotations || 90° rotations || all rotations
|-
! Graphics
| no clipping<br>filled rectangles || rectangular clipping<br>filled outlines || arbitrary clipping<br>filled outlines
|-
! Color
| solid/sampled black || grayscale || full color
|-
! Pixel
| binary arrays || binary arrays || grayscale arrays
|}