1 files changed, 7 insertions, 0 deletions
diff --git a/include/fitz/tree.h b/include/fitz/tree.h
index ced3b491..9f76f167 100644
--- a/include/fitz/tree.h
+++ b/include/fitz/tree.h
@@ -1,3 +1,10 @@
+/*
+ * The display tree is at the center of attention in Fitz.
+ * The tree and most of its minor nodes.
+ * Paths and text nodes are found elsewhere.
+ * Resources used are also found elsewhere.
+ */
+
 typedef struct fz_tree_s fz_tree;
 typedef struct fz_node_s fz_node;