diff --git a/CustomMetadata.md b/CustomMetadata.md
index e94780c4..c5c969aa 100644
--- a/CustomMetadata.md
+++ b/CustomMetadata.md
@@ -29,6 +29,7 @@ See also the examples below.
 * `axis2` - label of axis 2
 * `axis3` - label of axis 3
 * `axis4` - label of axis 4
+* `otherMetadata` - the contents of [`getProperties`](https://imagej.nih.gov/ij/developer/api/ij/ij/ImagePlus.html#getProperties())
 
 ### Examples