Modulename : t-collatingmarks
Author     : Willi Egger
License    : Public Domain

Description
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t-collatingmarks offers an extension to the page arranging schemes built into ConTeXt. When preparing multiple sections, each section gets a collating mark on the spine on the outermost fold of the section. This mark moves down along the spine with each section number. When the bootblack is put together, it shows a staircase like row of markings on the spine. This enables the bookbinder to see whether the bootblack is assembled correctly i.e. that the sections are put on top of each other in sequence. 

Usage
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\usemodule[collatingmarks][Collatingmarks=yes]
\setuppapersize[A5][A2]
\setuplayout[location=middle,marking=on]
\setuppagenumbering[alternative=doublesided]
\setuparranging[2*4]

\setupCollatingmarks
	[pages=8,  % pages per sheet of paper double sided depending on the arrangement scheme used.
	sheets=1,  % sheets of paper used per section
	shift=0mm] % used for correction if horizontal page-shifting is used while imposition is active
\starttext
	\dorecurse{10}{\section{Text \recurselevel}\input tufte \par\subject{Ward} \input ward\par}
\stoptext 



