doc: outline usage

1 files changed, 7 insertions, 0 deletions

diff --git a/readme.rst b/readme.rst
index a51b7e9..1337387 100644
--- a/readme.rst
+++ b/readme.rst
@@ -5,6 +5,13 @@ format.
 
 Includes a utility ``sidparse`` for dissecting SIDs on the command line.
 
+entry points
+------------
+
+Convert to and from the string format using the *to_string* and *of_string*
+functions. The binary representations can be encoded and decoded using the
+corresponding *to_bytes* and *of_bytes* methods.
+
 building
 --------
 The main build system is Oasis_, but there is a wrapper for OPAM to simplify