Support for JSON formatted decoder output was introduced in commit
54614916a903 ("decode: add support for Google Trace Event output (JSON)")
in 2020-07. Update the manpage.
.BR "\-\-protocol\-decoder\-ann\-class
When given, decoder annotations will include annotation class names.
.TP
+.BR "\-\-protocol\-decoder\-jsontrace
+When given, decoder output uses the Google Trace Event format (JSON).
+Which can be inspected in web browsers or other viewers.
+.TP
.BR "\-l, \-\-loglevel " <level>
Set the libsigrok and libsigrokdecode loglevel. At the moment \fBsigrok\-cli\fP
doesn't support setting the two loglevels independently. The higher the