1 files changed, 4 insertions, 0 deletions

diff --git a/filter/Doc b/filter/Doc
new file mode 100644
index 00000000..8e9c6b35
--- /dev/null
+++ b/filter/Doc
@@ -0,0 +1,4 @@
+H Filters
+S filter.c
+S tree.c
+S trie.c
\ No newline at end of file