diff --git a/hexdump2.text b/hexdump2.text
index eb41155..1488429 100644
--- a/hexdump2.text
+++ b/hexdump2.text
@@ -98,4 +98,17 @@ block e
 00003800  6b 00 6c 00 6d 00 00 00  00 00 00 00 00 00 00 00  |k.l.m...........| << indirect block
 00003810  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 *
-000c8000
\ No newline at end of file
+000c8000
+
+
+
+
+
+
+symbolic links: regular file but only 1 block is allowed.  block stores raw text (may be a dangling link).
+
+white out, fifo, unix domain socket, etc:
+no blocks on disk.
+
+character device, block device:
+zone 0 stores the major/minor device type.  No blocks on disk.
\ No newline at end of file