diff --git a/docs/workflows.md b/docs/workflows.md
index 18c3dbf..481b4b2 100644
--- a/docs/workflows.md
+++ b/docs/workflows.md
@@ -39,7 +39,7 @@ Every GitHub Actions workflow and composite action in the studio's repositories
 ## Spacing and quoting
 
 - Exactly one empty line separates top-level keys, jobs and steps; there is none right before `steps`.
-- Strings are quoted only where YAML requires it, with double quotes.
+- Plain strings go unquoted; patterns such as globs and cron expressions, and strings YAML requires quoted, use double quotes.
 
 ## Composite actions