3 <img src="/images/ruler.png" alt="Ardour's Ruler">
10 <p> The <dfn>Ruler</dfn> scales the session along time, allows navigating, and
11 can be marked for different uses.
14 One of its main uses is to move the playhead:
15 clicking anywhere on the timeline will bring the playhead at this location in
16 time. Also, using the mouse's scrollwheel while hovering the Ruler will zoom in
17 or out (<kbd class="mouse">⇑</kbd>/<kbd class="mouse">⇓</kbd> ).
20 The Ruler is made of a succession of rows, each having a special role related to
21 time. Adding or removing rows can be done by <kbd class="mouse">right</kbd> clicking
22 anywhere in the ruler's header on the left, and ticking any of:
27 <th><dfn>Mins:Secs</dfn></th>
28 <td>scaling the session with the Mins:Secs:mSec notation</td>
31 <th><dfn>Timecode</dfn></th>
32 <td>scaling the session with the Hours:Mins:Secs:Frames notation</td>
35 <th><dfn>Samples</dfn></th>
36 <td>scaling the session with the sample number notation</td>
39 <th><dfn>Bars:Beats</dfn></th>
40 <td>slicing the time according to the time signature</td>
43 <th><dfn>Time Signature</dfb></th>
44 <td>shows the time signature. It can be changed along the timeline, by
45 <kbd class="mouse">Right-click</kbd> >
46 <kbd class="menu">New Time Signature</kbd>. The Bars:Beats ruler will
47 reflect the change.</td>
50 <th><dfn>Tempo</dfn></th>
51 <td>shows the BPM. It can be changed along the timeline, by
52 <kbd class="mouse">Right-click</kbd> > <kbd class="menu">New Tempo</kbd>.
53 The Bars:Beats ruler will reflect the change.</td>
56 <th><dfn>Range Markers</dfn></th>
57 <td>allow to create and modify ranges directly on the Ruler.</td>
60 <th><dfn>Loop/Punch Ranges</dfn></th>
61 <td>are special kind of ranges designed to be played as a loop and to do
62 punch recording, i.e. recording on a precise section of time, respectively.</td>
65 <th><dfn>CD Markers</dfn></th>
66 <td>are markers designed to be used while creating a recording that has
67 to be split in time, as an audio CD</td>
70 <th><dfn>Location Markers</dfn></th>
71 <td>is meant to receive any kind of marker, user generated or from Ardour
75 <th><dfn>Cue markers</dfn></th>
76 <td>allows triggering entire cues from the grid in the <em>Cue</em>window</td>
79 <th><dfn>Video Timeline</dfn></th>
80 <td>shows thumbnails of the <a href="@@video-timeline-and-monitoring">video</a>
86 Most of the operations on the markers are described in <a
87 href="@@working-with-markers">Working with Markers</a>, while the Time Signature,
88 Tempo, Bars:Beats and Timecode use are described in <a
89 href="@@tempo-and-meter">Tempo and Time Signature</a>.