diff --git a/Works-in-progress.md b/Works-in-progress.md
index b919230..01ce1e7 100644
--- a/Works-in-progress.md
+++ b/Works-in-progress.md
@@ -18,11 +18,14 @@
         - [ ] `equal`
         - [ ] `lexicographical_compare` (using 3-way comparisons)
         - [ ] `begin` and `end`
-- Datastructures
+- [ ] Datastructures
     - [ ] `flat_tree`
     - [ ] UTF-8 `string` (See BigJ's string)
+        - [ ] UTF-8 range identification function
     - [ ] `tuple`
     - Filesystems
+        - [ ] `generic_filesystem` type erasing wrapper (`gp::function` style?)
+            - with 9P implementation?
         - [ ] Filesystem union
         - [ ] PubSub plumber filesystem
         - [ ] Typical ramfs