+.RS
+.RS 4
+.TP 3
+\(em
+initial cluster score
+.TP
+\(em
+number of steps in the solution
+.TP
+\(em
+final cluster score
+.TP
+\(em
+improvement in the cluster score
+.RE
+.RE
+
+.TP
+.BI "-O " name
+This option (which can be given multiple times) will mark nodes as
+being \fIoffline\fR. This means a couple of things:
+.RS
+.RS 4
+.TP 3
+\(em
+instances won't be placed on these nodes, not even temporarily;
+e.g. the \fIreplace primary\fR move is not available if the secondary
+node is offline, since this move requires a failover.
+.TP
+\(em
+these nodes will not be included in the score calculation (except for
+the percentage of instances on offline nodes)
+.RE
+Note that hbal will also mark as offline any nodes which are reported
+by RAPI as such, or that have "?" in file-based input in any numeric
+fields.
+.RE
+
+.TP
+.BI "-e" score ", --min-score=" score
+This parameter denotes the minimum score we are happy with and alters
+the computation in two ways:
+.RS
+.RS 4
+.TP 3
+\(em
+if the cluster has the initial score lower than this value, then we
+don't enter the algorithm at all, and exit with success
+.TP
+\(em
+during the iterative process, if we reach a score lower than this
+value, we exit the algorithm
+.RE
+The default value of the parameter is currently \fI1e-9\fR (chosen
+empirically).
+.RE