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<?xml version="1.0" standalone="no"?>
<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
]>
<section id="editor-window-timeline">
<title>Timeline</title>
<para>
At the top of the track display area is the timeline display. This consists
of a number of rulers, a meter track, a tempo track and the marker display.
</para>
<para>
The available rulers include:
</para>
<table id="tbl-rulers">
<title>Ruler Types</title>
<tgroup cols = "2">
<colspec colnum="1" colname="Ruler Type" colwidth="1"/>
<colspec colnum="2" colname="Description" colwidth= "2"/>
<thead>
<row>
<entry>
Ruler Type
</entry>
<entry>
Description
</entry>
</row>
</thead>
<tbody>
<row>
<entry>
Frames
</entry>
<entry>
this ruler measures audio frames. The number of audio frames per second
depends on the sample rate in use.
</entry>
</row>
<row>
<entry>
SMPTE
</entry>
<entry>
this ruler displays SMPTE timecode. The SMPTE format (25fps, 30fps, drop
frame etc) is selected in the Options Editor option_editor.
</entry>
</row>
<row>
<entry>
Min:Sec
</entry>
<entry>
this ruler displays time in minutes+seconds, measured since the start of
the session.
</entry>
</row>
<row>
<entry>
BBT
</entry>
<entry>
<para>
(Bars,Beats,Ticks) this ruler displays positions based on the tempo
map.
</para>
</entry>
</row>
</tbody>
</tgroup>
</table>
<para>
To show or hide one or more of the rulers, click on the area to the left of
their names. A menu will popup that has a check item for each available
ruler. Click on the name of the ruler to toggle its visibility.
</para>
<para>
The tempo and meter tracks display the tempo map for the session. The tempo
track contains 1 or more tempo change points, with a default tempo of 120
beats per minute. The meter track contains 1 or more meter change points,
with an initial default meter of 4/4.
</para>
<para>
on a tempo/meter change point to edit it. Click in the tempo/meter track to
add a new change point. Click and drag on a change point to move it. on a
tempo/meter change point to remove it.
</para>
<para>
There is more information on using the timeline in editing_basics.
</para>
<!--
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
href="Some_Subsection.xml" />
-->
</section>
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