added footnote

openpreserve · Apr 9, 2024 · f51e512 · f51e512
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commit f51e512
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diff --git a/_posts/2024-04-08-jpylyzer-2-2-1.md b/_posts/2024-04-08-jpylyzer-2-2-1.md
@@ -6,9 +6,11 @@ title: Jpylyzer 2.2.1 bugfix release
 
 We just released a first bugfix release for Jpylyzer 2.2. This fixes the following bugs in the 2.2.0 release:
 
-* The check on the expected tile parts per tile (*foundExpectedNumberOfTileParts*) got broken at some point, which meant discrepancies between the expected and actual tile parts per tile would go unnoticed.
+* The check on the expected tile parts per tile (*foundExpectedNumberOfTileParts*) got broken at some point, which meant discrepancies between the expected and actual tile parts per tile would go unnoticed[^1].
 * Jpylyzer would report an "unknown error" message if no *bPCSignValues* or *bPCDepthValues* could be read from the Bits Per Components Box. This would typically happen if this box was missing.
 
 In addition, this release fixes a few packaging issues (thanks to Janne Pulkkinen for [the contribution](https://github.com/openpreserve/jpylyzer/pull/224)), and some problems with the unit tests.
 
 Happy jpylyzing!
+
+[^1]: As an example, a software bug in Adobe Photoshop's default JPEG 2000 plugin has been known to result in [JPX images with erroneous tile-part information](http://web.archive.org/web/20231001094926/https://wiki.opf-labs.org/display/TR/Erroneous+tile-part+information+in+images+created+by+Adobe+Photoshop).