Explain that ids can be left out if single stream/event

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/common-trace-format-proposal.txt b/common-trace-format-proposal.txt
index 8182ea991f7da92d49b2a35e193ec91213d62762..71d9140704eb049dba1032c11c392f209f802b21 100644 (file)
--- a/common-trace-format-proposal.txt
+++ b/common-trace-format-proposal.txt
@@ -905,6 +905,10 @@ Note that the trace endianness is usually extracted from the packet
 header magic number. The "endian" field is only needed when the magic
 number packet header field is not present.
 
+The stream "id" can be left out if there is only one stream in the
+trace. The event "id" field can be left out if there is only one event
+in a stream.
+
 trace {
   major = value;                               /* Trace format version */
   minor = value;