-<p>Audio locked tempo marks stay in their frame position as their neigbours positions are altered. Their pulse (musical) position will change as their neighbours move.
-Music locked tempo marks move their frame position as their neighbours are moved, but keep their pulse position (they will move as the music is moved).
+
+<ul>
+ <li>by double clicking on a tempo marker. This opens the tempo dialog which
+ allows entering the tempo directly into an entry box.</li>
+ <li>by using the constraint modifier (<kbd class="mod3n"></kbd> by default,
+ may be changed in Preferences->Editor->Modifiers)
+ to drag the beat/bars in the BBT ruler or the tempo/meter lines.
+ This is the preferred way to match the tempo to previously recorded
+ material.</li>
+
+ <p class ="note">
+ When dragging the BBT ruler, musical snap has no effect, however be warned
+ that non-musical snap is in effect if enabled. Snapping to a minute while
+ dragging a beat may result in some very slow tempos. Snapping a beat to a
+ video frame however is an incredibly useful way to ensure a soundtrack is
+ punchy and synchronised to the sample.
+ </p>
+
+ <li>by holding down the constraint modifier while dragging a tempo vertically.
+ This is used for more complex tempo solving, as it allows changing of the
+ position and tempo of a tempo marker in the same drag; it is, however, a
+ useful way to adjust the first tempo for a quick result.</li>
+</ul>
+
+<p>
+ A tempo may be locked to audio or musical time. This can be changed by <kbd
+ class="mouse">right</kbd>-clicking on a tempo. If a tempo is locked to music,
+ an entry will be available to lock it to audio. Similarly an audio-locked
+ tempo may be locked to music by <kdb class="mouse">right</kbd>-clicking it
+ and selecting the "Lock to Music" entry.