--- /dev/null
+<para>
+ The 'mmo' format provides support for binary .mmo files used by the
+ Memory-Map Navigator software.
+</para>
+<para>
+ Our module was reverse engineered from a couple of .mmo files found
+ in the www. The results of the writing code have been tested with a current
+ Memory-Map Navigator trial ('Viewer') release.
+</para>
+<para>
+ Because of different file versions and sometimes slightly different file structure
+ we cannot ensure, that every .mmo file is loadable at this time. If you have one,
+ which causes errors, please provide it [mailto:gpsbabel-misc@lists.sourceforge.net].
+</para>
+<para>
+ More information can be found at the
+ <ulink url="http://www.memory-map.com/">Memory-Map</ulink> site.
+</para>
--- /dev/null
+<para>
+ By default GPSBabel creates only 'un-locked' items.
+</para>
+<para>
+ Sample command to write an mmo file with 'locked' items:
+</para>
+<para>
+ <userinput>
+ gpsbabel -i gpx -f in.gpx -o mmo,locked=y -F out.mmo
+ </userinput>
+</para>
--- /dev/null
+<para>
+ This option can be useful, if you want to convert a big file with a lot of entries.
+ By default GPSBabel creates only 'visible' items.
+</para>
+<para>
+ Sample command to write an mmo file with 'in-vsisible' items:
+</para>
+<para>
+ <userinput>
+ gpsbabel -i gpx -f in.gpx -o mmo,visible=n -F out.mmo
+ </userinput>
+</para>
+