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-rw-r--r--docs/reference.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/docs/reference.rst b/docs/reference.rst
index 2b10c2ee..fee1b702 100644
--- a/docs/reference.rst
+++ b/docs/reference.rst
@@ -22,6 +22,8 @@ PB_FIELD_32BIT Add support for tag numbers > 65535 and fields la
Increases code size 9 bytes per each field. Compiler error will tell if you need this.
PB_NO_ERRMSG Disables the support for error messages; only error information is the true/false return value.
Decreases the code size by a few hundred bytes.
+PB_BUFFER_ONLY Disables the support for custom streams. Only supports encoding to memory buffers.
+ Speeds up execution and decreases code size slightly.
============================ ================================================================================================
The PB_MAX_REQUIRED_FIELDS, PB_FIELD_16BIT and PB_FIELD_32BIT settings allow raising some datatype limits to suit larger messages.