Signed-off-by: Bill Fischofer <bill.fischo...@linaro.org>
---
 doc/users-guide/users-guide.adoc | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/doc/users-guide/users-guide.adoc b/doc/users-guide/users-guide.adoc
index 62f5833..745b85f 100755
--- a/doc/users-guide/users-guide.adoc
+++ b/doc/users-guide/users-guide.adoc
@@ -155,6 +155,17 @@ and minor release numbers correspond to the ODP API level 
that the suite
 validates and the fix level represents the service level of the validation
 suite itself for that API level.
 
+=== ODP Helpers
+ODP also provides a set of _helper_ functions that are
+distinguished by the `odph_` prefix. These are not part of the ODP API
+specification, but may be useful to both applications and implementations.
+This include things like mappings for common packet headers (IPv4, IPv6,
+TCP, UDP, etc.) as well as wrapper functions for the Posix threading model
+used in the odp-linux reference implementation of ODP. Helpers also provide
+a home for utility APIs that are more experimental in nature and
+are not part of the official ODP API specification. ODP helper APIs are
+described further in the _ODP Helper Reference Manual_.
+
 === ODP Design Goals
 ODP has three primary goals that follow from its component structure. The first
 is application portability across a wide range of platforms. These platforms
-- 
2.7.4

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