Tempo & Meter clarify last commit.

[ardour-manual] / _manual / 25_tempo-meter / 01_tempo-and-meter.html

diff --git a/_manual/25_tempo-meter/01_tempo-and-meter.html b/_manual/25_tempo-meter/01_tempo-and-meter.html
index 92ab7a76b096b609c9e7e4f527a1ab35f19de9bb..d5ed51523caabd1e537f0ae57949f311f82cfe04 100644 (file)
--- a/_manual/25_tempo-meter/01_tempo-and-meter.html
+++ b/_manual/25_tempo-meter/01_tempo-and-meter.html
@@ -7,7 +7,12 @@ menu_title: Tempo and Meter
 <p>Tempo and meter belong together. without both, there is no way to know where a beat lies in time.</p>
 
 <p>Tempo provides a musical pulse, which is divided into beats and bars by a meter.
-When you change tempo or move an audio-locked meter, all objects on the timeline that are glued to bars and beats (locations, regions) will move in sympathy.</p>
+  When you change tempo or move an audio-locked meter, all objects on the timeline that are glued to bars and beats (locations, regions) will move in sympathy.
+</p>
+<p class="note">When performing meter or tempo operations, it is advised that you show the BBT ruler (available by right-clicking an existing marker or ruler name),
+  and ensure that the constraint modifier is set (in Preferences->User Interaction) so that no other modifiers share its key combination.<br>
+  The constraint modifier is the "Constrain drags using : " setting under the "When Beginning a Drag" heading. One viable setting is control-shift.
+</p>
 
 <h3>Tempo</h3>
 <p>Tempo can be adjusted in several ways:
@@ -56,7 +61,6 @@ The new tempo will be the same as the tempo at the position of the mouse click (
 <p>To copy a tempo, hold down the primary modifier and drag the tempo you wish to copy.</p>
 
 <h3>Meter</h3>
-<br>
 <p>Meter positions beats using the musical pulse of a tempo, and groups them into bars using its number of divisions per bar.
 </p>
 <p>The first meter in a new session may be moved freely. It has an associated tempo which cannot be dragged by itself (although all others can).
@@ -79,9 +83,7 @@ If you need another bar, lock the meter to music again (right click->"Lock to Mu
 <br>
 <li>To copy a meter, hold down control and drag it.</li>
 
-<br>
 <h3>Techniques </h3>
-<br>
 <p>As a general approach, the best way to control tempo ramps is to use them in pairs.
 </p>
 <p>Lets imagine we want to match the click to a drum performance recorded in 'free time'.<br>
@@ -112,9 +114,7 @@ Look further to the left. The tempo lines in the first four bars do not move.
 
 <p>In a general sense, adding tempo markers in pairs allows you to 'pin' your previous work while you move further to the right.
 </p>
-<br>
-Another use case : matching accelerando.
-<br>
+<h3>Another use case : matching accelerando</h3>
 <p>Imagine you have some video and have located where your music cue begins. Move the first meter to that frame
 (you may snap to TC frames, but not music with an audio locked meter).
 </p>
@@ -137,7 +137,6 @@ you dragged the BBT ruler, making the second tempo provide enough pulses over th
 </p>
 <p>If your ramp doesn't feel correct, you may add more points within it and keep adjusting beat positions in a similar manner.
 </p>
-<br>
 <h3>General</h3>
 
 <p>Audio locked meters can be useful when composing, as they allow a continuous piece of music to be worked on in