.
.\"----- Licensing notice ---------------------------------------------------
.\"
-.\" This file is part of the Sensble Object Design, an object system for C.
+.\" This file is part of the Sensible Object Design, an object system for C.
.\"
.\" SOD is free software; you can redistribute it and/or modify
.\" it under the terms of the GNU General Public License as published by
Write a brief usage message to standard output,
and exit successfully.
.TP
+.B "\-\-backtrace"
+Generate a Lisp stack backtrace if an error is encountered.
+This is useful when debugging,
+if
+.B sod
+reports unusual errors, or
+is complaining unjustifiably about something.
+.TP
.B "\-\-builtins"
Generate output for to the built-in module,
which defines the root classes