diff --git a/pr-draft.md b/pr-draft.md
new file mode 100644
index 000000000..256c49aaf
--- /dev/null
+++ b/pr-draft.md
@@ -0,0 +1,14 @@
+## Summary
+
+Fixes #9471: Multi-valued variables (MVVs) introduced in #8972 lose their multi-valued nature when passed as procedure/function parameters through `$transclude` because `<<var>>` resolves to the first value only (for backwards compatibility).
+
+There has been a lot of discussion about these issues. Working through them has reversed my opinion on some points. In particular, it introduces the `((var))` syntax as the MVV counterpart to `<<var>>`, mirroring the existing relationship in filter operands where `<var>` returns a single value and `(var)` returns all values.
+
+## New syntax
+
+* `((var))` as widget attribute: Passes all values of the MVV to the procedure/function parameter
+* `((var))` as inline wikitext: Displays all MVV values joined with `, ` (default separator)
+* `((var\|\|sep))` as inline wikitext: Displays all MVV values joined with custom separator
+* `(((filter)))` as inline wikitext: Displays filter results joined with `, ` (default separator)
+* `(((filter\|\|sep)))` as inline wikitext: Displays filter results joined with custom separator
+* `((var))` as parameter default: e.g. `\procedure show(items:((defaults)))` — default value is the MVV