manual/include/bbt-markers.html

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<p>
<dfn>BBT markers</dfn> allow resetting the timeline to a particular bar and
beat. Most of the time a BBT marker will reset it to 1|1|0 (the very first
beat of the very first bar) so that for each song in a multi-song session
there would be a musical time origin. However it's entirely possible to reset
to an arbitrary value such as 7|3|0.
</p>
<p>
To create a new BBT marker, <kbd class="mod1n"></kbd>-click on the
Bars:Beats ruler. This will open a dialog titled 'New Music Time' where you
can name the marker and define what bar (left field) and beat (right field)
this marker should reset the time to.
</p>
<figure>
<img style="width:50%;" width="50%" src="/images/new-music-time.png" alt="New Music Time dialog">
<figcaption>New Music Time dialog</figcaption>
</figure>
<p>
The timeline grid and the ruler will be updated accordingly:
</p>
<figure>
<img style="width:50%;" width="50%" src="/images/bbt-marker-resets-musical-time.png" alt="The BBT marker resets the musical time">
<figcaption>The BBT marker resets the musical time</figcaption>
</figure>
<p>
Dragging a BBT marker rigth or left will reset the musical time at a different
position on the timeline.
</p>
<p>
Right-clicking on a BBT marker opens a menu with two options:
<kbd class="menu">Edit…</kbd> and <kbd class="menu">Remove</kbd>.
</p>
<p>
Choosing <kbd class="menu">Edit…</kbd> opens the
<kbd class="menu">Edit Musical Time</kbd> dialog where it's possible to rename
the marker and set a different bar and/or beat to reset the musical time to:
</p>
<figure>
<img style="width:50%;" width="50%" src="/images/edit-bbt-marker.png" alt="Edit Musical Time">
<figcaption>The Edit Musical Time dialog</figcaption>
</figure>
<p>
Choosing <kbd class="menu">Remove</kbd> deletes the marker.
</p>