From 7cef6c56ca0ab59cba68a05bf1edcffad52db79b Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Sun, 11 Dec 2022 19:43:07 +0100
Subject: add link to german wikipedia pafe on PDF file format
---
USE.md | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/USE.md b/USE.md
index f03aa3c..24a93fe 100644
--- a/USE.md
+++ b/USE.md
@@ -37,7 +37,7 @@ Simple measures are standard page formats like A4, A3, or letter,
but more reliable are internal "box" dimensions measured in "pt":
In addition to page sizes,
-PDF files technically annotate content using several "boxes":
+PDF files technically annotate content using several "[boxes]":
* MediaBox: full printable area
* Required
@@ -57,6 +57,9 @@ but the equivalent of ArtBox in EPS and DSC-compliant Postscript.)
E.g. an A4 sized PDF page
is technically a page with a /MediaBox of approx. [595 x 842 pt][page_dimensions].
+[boxes]: <https://de.wikipedia.org/wiki/Portable_Document_Format#Angaben_der_Seitengeometrie>
+ "Wikipedia article about PDF file format, section on page geometry"
+
### Extracting PDF box hints
Resolve all boxes (computing from defaults any omitted ones):
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