You may also specify the actual names of the compression algorithms, "XPRESS"
and "LZX", instead of "fast" and "maximum", respectively.
.TP
+\fB--compress-slow\fR
+Like \fB--compress\fR=\fImaximum\fR, but spend even more time compressing the
+data to achieve a very slightly better compression ratio.
+.TP
\fB--threads\fR=\fINUM_THREADS\fR
Number of threads to use for compressing data. Default: autodetect (number of
available CPUs).