+<h2>Common elements</h2>
+<p>
+ Each section has a set of <dfn>editable <a
+ href="/ardours-interface/using-ardour-clock-displays/">clock widgets</a></dfn>
+ which display
+ the location of a marker, or the start, end, and duration times of a range,
+ respectively.<br />
+ The <kbd class="menu">Use PH</kbd> buttons allow you to set
+ the corresponding clock to the current playhead position.
+ A <kbd class="mouse">Middle</kbd> click on any of the clocks will move
+ the playhead to that location. Both functions are also available from the
+ clock context menus.<br />
+ Right clicking on any of the clocks brings up a context menu that allows
+ changing of the display between Timecode, Bars:Beats, Minutes:Seconds,
+ and Samples.<br />
+</p>
+<p>
+ The <kbd class="menu">—</kbd> (subtract) button in front of each
+ user-defined range or marker in the list allows that particular item to
+ be removed. The name fields of custom ranges and markers can be edited.
+</p>
+<p>
+ The <kbd class="option">Hide</kbd> checkboxes make markers and ranges invisible
+ on the respective ruler to reduce visual clutter; the markers remain
+ active however, and can be used normally.<br />
+ Selecting <kbd class="option">Lock</kbd> prevents the respective marker
+ from being moved until unlocked.
+ Where applicable, <kbd class="option">Glue</kbd> fixes the marker position
+ relative to the current musical position expressed in bars and beats, rather
+ than the absolute time. This will make the respective marker follow
+ changes in the tempo map.
+</p>
+<p>
+ At the bottom of the list are buttons to add new markers or ranges.
+</p>
+ <h2>List sections</h2>