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== Pre-defined paper sizes Predefined Paper Sizes ==

Both Beyond <tt>A4</tt> and <tt>letter</tt> are predefined paper sizes. , ConTeXt predefines many other commonly used paper sizes(see [[Paper sizes|Paper sizes page]] for actuals dimensions in mm). These include:

* <tt>letter<; ISO (EN/tt>, <tt>ledger</tt>, <tt>tabloid</tt>, <tt>legal</tt>, <tt>folio</tt>, and <tt>executive</tt> DIN) sizes from the North American paper standard;: :* sizes <tt>A0</tt> &ndash; <tt>A10</tt>, <tt>B0</tt> &ndash; <tt>B10</tt>, series A and <tt>C0</tt> &ndash; <tt>C10</tt> from the A, B, and C series of the from ISO-216 standard;(e.g. "A4"):* envelope: serie C 0–10, plus DL:* sizes <tt>RA0</tt> &ndash; <tt>RA4</tt> and <tt>SRA0</tt> &ndash; <tt>SRA4</tt> from the series RA and , SRA series of 0–4, from ISO-217 paper standard;:* sizes <tt>ISO-based "2 A0" (double A0), "4 A0", "C6/C5</tt>", A3plus; US sizes:* letter, ledger, tabloid, legal, folio, executive, A, <tt>DL</tt>B, and <tt>E4</tt> from ISO-269 standard envelope sizes;C:* <tt>envelope: "envelope 9</tt> &ndash" (10, 11, 12, 14), monarch, check, DL, E4; <tt>envelope 14</tt> Swedish sizes from the American postal standard;:* sizes <tt>G5</tt> and <tt>E5</tt> from the Swedish SIS-014711 standard. These are used for Swedish theses;; Screen sizes:* size <tt>CD</tt> for CD covers;4:3 ratio: S3–6 (width 300–600 pt):* size <tt>S3</tt> &ndash; <tt>S6</tt>1:1 ratio: S33, <tt>S8</tt>S44, <tt>SM</tt>S55, and <tt>SW</tt> for screen sizesS66 (300 &times; 300 pt etc. These sizes are useful for presentations. <tt>S3</tt> ):* 8:5 ratio: SM (720 &ndashtimes; <tt>450 pt), they have the same height as S6</tt> and <tt>S8</tt> have an aspect :* 16:9 ratio of 4:3. <tt>S3</tt> is 300pt wide, <tt>S4</tt> is 400pt wide, and so on. <tt>S6</tt> is almost as wide as a <tt>A4</tt> paper. <tt>SM</tt> and <tt>SW</tt> are for medium and wide screens(800 &times; 450 pt), they have the same height as <tt>S6</tt>; CD (120 &times;120 mm) for CD Covers * a few more paper sizesPlus keywords oversized (plus 1.5 cm), doublesized, doubleoversized, which I will not mention hereundersized (minus 1.5 cm). See <tt>For definitions, see {{src|page-lay.mki(imkii}} and {{src|v)</tt> for detailspage-lay.mkiv}}.

Occasionally you may want to print on a larger paper than the actual page size. This could be because you want to print to the edge of the page&mdash;so you print on a large paper and crop later&mdash;or because the page size that you are using is not standard. For example, suppose you want to print an <tt>A5</tt> page on a an <tt>A4</tt> paper (and crop later). For that, you need to specify that the paper size is <tt>A5</tt> but the ''print paper'' size is <tt>A4</tt>. This information is specified using the two argument version of the {{cmd|setuppapersize}}:

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