docs: Add description of format

Signed-off-by: Chloe M. <chloe@faracom.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/README.md b/README.md
index 2a12b73..08c0196 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,17 @@ RDAR does not intend to replace existing formats and instead aims to provide a p
 ## Building
 
 Simply run ``make`` and that's it !!
+
+## Format
+
+The format is simple:
+
+```
+   0: root [points to root data region (rdr)]
+  /
+ /
+0~  [DATA DESCRIPTOR] ---------+ OFFSET
+1~  [DATA DESCRIPTOR] -------- |---+ OFFSET
+2~  [FILE]  <------------------+   |
+3~  [FILE]  <----------------------+
+```