-When -n is specified, instead of "[PATCH] Subject", the first line is formatted
-as "[PATCH N/M] Subject", unless you have only one patch.
+When -o is specified, output files are created in <dir>; otherwise
+they are created in the current working directory. This option
+is ignored if --stdout is specified.
+
+When -n is specified, instead of "[PATCH] Subject", the first
+line is formatted as "[PATCH N/M] Subject", unless you have only
+one patch.
+
+When --attach is specified, patches are attached, not inlined.'