Document field extensions support

[apps/agl-service-can-low-level.git] / docs / index.rst

diff --git a/docs/index.rst b/docs/index.rst
index 897f552..e56ff4c 100644 (file)
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -41,7 +41,7 @@ Features and limitations
 #) Allows specifying maximum size for strings and arrays, so that they can be allocated statically.
 #) No malloc needed: everything can be allocated statically or on the stack.
 #) You can use either encoder or decoder alone to cut the code size in half.
-#) Support for most protobuf features, including: all data types, nested submessages, default values, repeated and optional fields, packed arrays.
+#) Support for most protobuf features, including: all data types, nested submessages, default values, repeated and optional fields, packed arrays, extension fields.
 #) Callback mechanism for handling messages larger than can fit in available RAM.
 #) Extensive set of tests.
 
@@ -103,6 +103,8 @@ Nanopb should compile with most ansi-C compatible compilers. It however requires
 
 If these header files do not come with your compiler, you should be able to find suitable replacements online. Mostly the requirements are very simple, just a few basic functions and typedefs.
 
+Alternatively, you can define *PB_SYSTEM_HEADER*, which should be the name of a single header file including all the necessary definitions.
+
 Debugging and testing
 =====================
 Extensive unittests are included under the *tests* folder. Just type *make* there to run the tests.