Changes

To impose means to order pages on a bigger sheet In general, imposition is accessed in a wayConTeXt using {{cmd|setuparranging}}, that you get a booklet (or something similar) with correct page order after folding.In from the simplest case you impose four A5 pages on both sides of an A4 sheet.command line as follows:<pre>In a print shop it could be that you've to place 64 inner pages of a book on one printing sheet. For private use you could want to zigzagcontext --fold an A4 sheet as a brochure that fits nicely in a business envelope. You could make two pages with three columns each, or you could make six pages and impose them. Another "style" of imposition is to place several identical templates on one sheet, epdfarrange=.g. labels.</pre>

==Imposition schemas==

===Default schemas===

* XY : one sheet with x rows and y columns, you can control the number with [[{{cmd:setuppaper|\setuppaper]]}}[nx=...,ny=...,dx=...,dy=...]

\unprotectsetuppapersize[A7][A4,landscape]\setuppaper[nx=4, ny=2] % New must come before \setuparranging!\setuplayout[page ][location=middle, marking=on]\setuparranging [XY]</texcode> Here’s an example for [[Labels]]. ===Testing schemas=== Here's a convenient test file to help choose a schema or write a new one: <context source=yes>\setuppapersize[A9, landscape][A7, landscape]  % the schema being tested\setuparranging [2*4]  % text describing the schema being tested, to print on the pages\def\Style{[2*4]} % Visuals\setupbodyfont[ss,10pt] \setuplayout [margin=0pt, width=fit, header=2.8ex, footer=2.8ex] \setuppagenumbering [alternative=doublesided,location=footer]\setupheadertexts[\CONTEXT\ imposition scheme 3SIDE by Willi Egger 2003-07-21test]

\installpagearrangement 3SIDEshowframe {\dosetuparrangement{3}{1}{6}{4}{2}% \pusharrangedpageTHREESIDE\poparrangedpagesAB\relax}setupbackgrounds [text][text][background=color,backgroundcolor=lightgray]

\def\pusharrangedpageTHREESIDE#1% Willi's approach {\doglobal\increment\arrangedpageN \reportarrangedpage\arrangedpageN \ifcase\arrangedpageN \or \handlearrangedpageXandY{#1}000\arrangedpageA % 1 \or \handlearrangedpageXandY{#1}010\arrangedpageA % 2 \or \handlearrangedpageXandY{#1}020\arrangedpageA % 3 \or \handlearrangedpageXandY{#1}000\arrangedpageB % 4setupcolors [state=start] \or \handlearrangedpageXandY{#1}010\arrangedpageB % 5Where the block of pages is placed on the sheet \or \handlearrangedpageXandY{#1}020\arrangedpageB % 6 \poparrangedpages(Not relevant in this example, but relevant if there is space left over.) \fi}setuplayout [location=middle,marking=on]

\protectstartbuffer[Fakepage]</texcode> \strutYou can use this code simply in your environment file. The other schemas are in <tt> \blank \midaligned{\Style} \vfill \midaligned{This is page-imp.tex</tt>.\recurselevel} \vfill\stopbuffer

Use it like this:<texcode>\starttext \definepapersize [filius][width=92mm, height=172mm]dorecurse{16}{\setuppapersize [filius]getbuffer[A4,landscapeFakepage]\setuparranging [3SIDE]page}\setuplayout [location=middle, alternative=singlesided, grid=no, marking=on, leftmargin=10mm, leftmargindistance=0mm, topspace=2mm, header=4mm, footer=0mm, width=77mm, height=166mm]stoptext</texcodecontext>

ConTeXt is also handy when you need to '''rearrange an existing pdf''' into a booklet. This is a trial-and-error solution by Mari for rearranging an A4 pdf file into 2*8 spreads on A3 sheet (-> A6 pages when printed and cut). The texexec.tex file that was created by the first tries with <tt>texexec --pdfarrange</tt> (which didn't seem to have enough options) was a great help while working towards this solution.

For proofing one sometimes wants to pick just some pages and when the original is A5, it is kind of handy to put them side-by-side for proofing. The command {{cmd|filterpages}} allows you to define exactly what pages are needed. Be warned, though, that the page numbers refer to the pages in the pdf file, not the page numbers.  <texcode>\setuppapersize[A5][A4] %individual page A5 size, print size A4\setuparranging[2SIDE,rotated] %2 pages side by side, rotated to landscape to fit portrait A4\setuplayout [backspace=0pt, topspace=0pt, width=Testing schemasmiddle, height=middle, location=middle, header=0pt, footer=0pt]\setuppagenumbering[alternative=doublesided] \starttext \filterpages [file.pdf][2,5,16:19][width=0pt] %picks pdf pages 2, 5, and 16-19. \stoptext</texcode> For more information, see the article on [[Including pages from PDF documents]]. === Custom imposition schema=== You can create a new imposition schema to meet your needs. To do so, take a look at the imposition definitions stored in <code>page-imp.mkiv</code> and find the closest one to work with. You can access the file online: https://source.contextgarden.net/tex/context/base/mkiv/page-imp.mkiv?search=installpagearrangement Let's say we want this page arrangement on one sheet (R = page upside down): <pre>P4 P1R3 R2</pre> This is a mirrored/reversed version of {{cmd|setuparranging}}<code>[1*4]</code>, which gives:

<texcodecontext source=yes>\setupbodyfont[ss,10pt]\setuppapersize [A7][A4] \setuparranging [2*2*4,doublesided] %% the schema you want to test\setuppagenumbering [alternative=doublesided,location=footer]\setuplayout [margin=0pt,width=fit] \setupbackgrounds [text][text][background=screen,backgroundscreen=0Adapted from page-imp.7] \setupcolors [state=start] \setuplayout [location=middle,marking=on]\setuptolerance [tolerant] mkiv

\definstallpagearrangement 1*4*reversed {\Styledosetuparrangement{[2*}{2*}{4}{3}{3}% X,Y,Total,hcutmarks,doublesided]vcutmarks \pusharrangedpageFOURSINGLESIDEDFOLDEDREVERSED\poparrangedpagesTWO\relax}

\startbuffersetuppapersize [FakepageA10][A8] \strutsetuparranging [1*4*reversed] \blank \midaligned{\Style} \vfill \midaligned{This is page \recurselevel} \vfill\stopbuffersetuplayout [margin=0pt, width=fit]

\setupheadertexts[\CONTEXT\ imposition test document]showframe

% \showframe\dorecurse{164}{\getbuffer[Fakepage]vbox to \textheight{\vfill\midaligned{\tfd ABC}\vfill}\page}\stoptext</context> If it is necessary to have a different imposition scheme for the second page it is possible to create an arrangement that spans two physical pages. As an example the following schema arranges the pages like this <pre>P4 P1R3 R2 P5 P6P7 P8</pre>

<context source=yes>\installpagearrangement 1*4*reversed*1*4 {\dosetuparrangement{2}{2}{4}{3}{3}% X,Y,Total,hcutmarks,vcutmarks \pusharrangedpageFOURSINGLESIDEDFOLDEDREVERSED\poparrangedpagesAB\relax} \def\pusharrangedpageFOURSINGLESIDEDFOLDEDREVERSED#1% {\advancearrangedpageN \reportarrangedpage\arrangedpageN \ifcase\arrangedpageN \or \handlearrangedpageXandY{#1}010\arrangedpageA % 1 rot,hskip,vskip \or \handlearrangedpageXandY{#1}111\arrangedpageA % 2 \or \handlearrangedpageXandY{#1}101\arrangedpageA % 3 \or \handlearrangedpageXandY{#1}000\arrangedpageA % 4 \or \handlearrangedpageXandY{#1}000\arrangedpageB % 5 \or \handlearrangedpageXandY{#1}010\arrangedpageB % 6 \or \handlearrangedpageXandY{#1}001\arrangedpageB % 7 \or \handlearrangedpageXandY{#1}011\arrangedpageB % 8 \poparrangedpages \fi}</context> The <code>\arrangedpageA</code> and <code>\arrangedpageB</code> are box registers that you can use to build up your desired output pages. They actually go up to <code>\arrangedpageH</code>.  ''Note:'' if your imposition scheme needs more than eight physical pages see below [[#Imposition_by_signatures|Imposition by signatures]] on how to interface with an external imposer program. As you can see in  https://source.contextgarden.net/tex/context/base/mkiv/page-imp.mkiv?search=poparrangedpages.+ there are various alternative definitions of <code>\poparrangedpagesAB</code> that manipulate to box registers in different ways to output the desired imposition. The macro <code>\installpagearrangement</code> makes the generic <code>\poparrangedpages</code> use one of those alternatives (in this case <code>\stoptextpoparrangedpagesAB</texcodecode>).

ConTeXt also allows to place cut marks. This can be controlled using the <tt>marking</tt> option of [[{{cmd:setuplayout|\setuplayout]]}}; possible values are:

Note that some features (e.g. table of contentcontents, internal references) are always disabled in imposition mode. So, they will not be included in the pdf if you ask for imposition.To get rid of this you can use the "arrange" key for texexecthe <code>context</code> command.

texexec context --arrange yourFilename

When you use imposition to print a booklet you want to put something on the very last page, the <code>quadruple</code> pagebreak did not always fill the remaining pages untill until you get a quadruple number of pages.