The Mark menu contains commands to set the beginning and end points of your objects, add markers to the Timeline, navigate through your project, and control animation of effects.
Mark In: Sets the beginning frame of the play range to the current playhead position if no object is selected. If an object is selected, this command trims the In point for that object to the current playhead frame. (I)
Mark Out: Sets the ending frame of the play range to the current playhead position if no object is selected. If an object is selected, this command trims the Out point for that object to the current playhead position. (O)
Move Selected In Point: Moves the selected object or objects so the In point aligns with the current playhead position. (Shift-Left Bracket)
Move Selected Out Point: Moves the selected object or objects so the Out point aligns with the current playhead position. (Shift-Right Bracket)
Markers: Opens a submenu of commands for creating, modifying, and deleting markers. See Work with markers overview. The submenu includes the following commands:
Add Marker: Adds a marker at the current playhead frame. If an object is selected, an object marker is added. If no object is selected, a project marker is added. (Press M or the Tilde key [~] to add an object marker; press Shift-M to add a project marker.)
Edit Marker: Opens the Edit Marker dialog, where you can set a marker’s name, type (for project markers), color, duration, and comment. A marker must be selected for this menu item to be active. (Option-Command-M)
Delete Marker: Removes the selected marker from the project.
Delete All Markers: Removes all markers from the selected object. If no object is selected, this command deletes all project markers.
Mark Play Range In: Sets the play range In point to the location of the playhead. (Option-Command-I)
Mark Play Range Out: Sets the play range Out point to the location of the playhead. (Option-Command-O)
Reset Play Range: Moves the play range In and Out points to the first and last frame of the project. (Option-X)
Play: Starts playback of the project. (Space bar)
Loop Playback: Turns looping on and off. When looping is enabled, playback repeats from the beginning of the play range after the end is reached. (Shift-L)
Record Animation: Turns keyframe recording on and off. See Add keyframes.
Recording Options: Opens the Recording Options dialog, where you can define user preferences for keyframe recording. See Simplify a keyframe-heavy curve.
Go to: Opens a submenu of commands for navigating to a specific frame in a project. The submenu includes the following commands:
Project Start: Moves the playhead to the first frame of the project. (Home)
Project End: Moves the playhead to the last frame of the project. (End)
Play Range Start: Moves the playhead to the project In point. (Shift-Home)
Play Range End: Moves the playhead to the project Out point. (Shift-End)
Previous Frame: Moves the playhead backward by one frame. (Left Arrow)
Next Frame: Moves the playhead forward by one frame. (Right Arrow)
10 Frames Back: Moves the playhead backward ten frames. (Shift–Left Arrow)
10 Frames Forward: Moves the playhead forward ten frames. (Shift–Right Arrow)
Previous Keyframe: Moves the playhead to the previous keyframe in the project. (Option-K)
Next Keyframe: Moves the playhead to the next keyframe in the project. (Shift-K)
Previous Marker: Moves the playhead to the closest marker earlier in time. (Option–Command–Left Arrow)
Next Marker: Moves the playhead to the closest marker later in time. (Option–Command–Right Arrow)
Selection In Point: Moves the playhead to the first frame of the selected object. (Shift-I)
Selection Out Point: Moves the playhead to the last frame of the selected object. (Shift-O)
RAM Preview: Opens a submenu of commands to play back your project in real time, by temporarily storing the frames in a RAM buffer. See Play back a project. The submenu includes the following commands:
Play Range: Renders the area between the project In and Out points and stores the frames in RAM. After the frames are stored, the region plays back at full speed. (Command-R)
Selection: Renders the range of time occupied by the selected objects and stores the frames in RAM. After the frames are stored, the region plays back at full speed. (Option-Command-R)
All: Renders the entire project and stores the frames in RAM. After the frames are stored, the region plays back at full speed. (Option-Shift-Command-R)
Clear RAM Preview: Clears the RAM cache.