a popular color matching system used by the printing industry to print spot colors.  Most applications that support color printing allow specification of colors by indicating the Pantone name or number.

a rotary perforator with one long horizontal row of pins and numerous short vertical columns of pins.  This pin format resembles a comb.  A single rotation perforates three sides of each of the stamps in a single row.

a method of <#stamp> separation in which thin layers of paper are removed by grinding instead of cutting or punching.  The result resembles <#perf=perforations>.

the waste produced by the process of <#diecut=die cutting>.

work-horse perforator at the <#bep=BEP> for definitive sheet <#stamp=stamps> during the late 1980s and beyond.  Introduced in February 1985, this machine uses a Eureka <#bullseyeperforations=bullseye perforation> die to perforate two adjoining <#pane=panes> across a printed <#web> at a time.  It also separated the web into <#sheet=sheets> four panes square then stacked them.