-session IDs. If a \fIsearch expression\fR is specified, it will be
-used to restrict the IDs that are displayed. An expression is
-composed of the following predicates:
+sessions in a format similar to the \fBsudo\fR log file format, sorted
+by file name (or sequence number). If a \fIsearch expression\fR is
+specified, it will be used to restrict the IDs that are displayed.
+An expression is composed of the following predicates: