+Without the option:--list option::
+ Add one or more context fields to be recorded by LTTng to the event
+ records of a given channel, or of all the channels of:
++
+With the option:--session='SESSION' option:::
+ The tracing session named 'SESSION'.
+
+Without the option:--session option:::
+ The current tracing session (see man:lttng-concepts(7) to learn more
+ about the current tracing session).