User guide

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The Timeline
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To lock or mute a track you have to use the buttons available in the ar-
eas right in front of the tracks. The button M mutes the track (bar it
from an output), while the button L locks it (bar it from an editing
work):
Figure 6-36: Buttons to lock and mute tracks
With the M and L buttons to the left side of the timeline scale you can
mute and lock all video and audio tracks with one click (master
mute/lock). Afterwards you may use the mute and lock buttons of in-
dividual tracks to enable them for the respective work again. This may
be especially useful when working with a lot of tracks.
When locking tracks and thus preserving them from changes, the
locked tracks will appear dimmed in the timeline area.
mute button lock button
master mute/lock