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+## Images
+
+## Storing images
+
+Any image files (.png, .jpg, .gif, ...) MUST be stored in a separate branch. By
+default, those filetypes are ignored in this git repository, and must be added
+with `git add -f "${file}"`.
+
+### Generating images
+
+All images in the *out* or the *intermediate* directory must be processed with
+the following command:
+
+```
+convert "${in}" -resize 600x -ordered-dither 3x3 -colorspace gray "${out}"
+convert "${in}" -resize 600x -ordered-dither 3x3 -colors 16 "${out}"
+```
+
+- The use of `-colors 16` is encouraged for colored pictures.