Indicate `update` moves files by default
@@ -316,7 +316,7 @@ update
beet update [-F] FIELD [-aM] QUERY
-Update the library (and, optionally, move files) to reflect out-of-band metadata
+Update the library (and, by default, move files) to reflect out-of-band metadata
changes and file deletions.
This will scan all the matched files and read their tags, populating the
