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## 3.4.2 Toolbar

The buttons in the toolbar of the Timeline window provide various basic services to the Timeline window. Table 3.14 contains the list of functionalities of the buttons found in the toolbar.

Table 3.14: Toolbar functionalities.

Icon | Description | Shortcut | Function
| Up | Alt-UP | Scroll upward by half a screen
| Down | Alt-DOWN | Scroll downward by half of a screen
| LabelMark | none | Mark the timeline(s)
| LabelMove | none | Move the marked timeline(s)
| LabelDelete | none | Delete the marked timeline(s)
| LabelExpand | Alt-E | Expand the y-axis tree label by 1 level. Useful in Process-Thread or Communicator-Thread view to expand each process timeline into multiple thread timelines in multi-threaded slog2 file.
| LabelCollapse | Alt-C | Collapse the y-axis tree label by 1 level. Useful in collapsing multiple thread timelines into single process timeline.
| Backward | Alt-LEFT | Scroll Backward by half a screen
| Forward | Alt-RIGHT | Scroll Forward by half a screen
| ZoomUndo | Alt-U | Undo the previous zoom operation
| ZoomOut | Alt-O | Zoom Out by 1 level in time
| ZoomHome | Alt-H | Reset zoom to the initial resolution in time
| ZoomIn | Alt-I | Zoom In by 1 level in time
| ZoomRedo | Alt-R | Redo the previous zoom operation
| SearchBackward | Alt-B | Search backward in time
| SeachInitialize | Alt-S | Search initialization from last popup InfoBox's time
| SearchForward | Alt-F | Search forward in time
| CanvasReDraw | Alt-D | Redraw canvas to synchronize changes from Preference/Legend window or y-axis label panel.
| Print | none | Print the Timeline window
| Exit | none | Exit the Timeline window

Next: 3.4.3 Y-Axis Label Panel Up: 3.4 Timeline Zoomable Window Previous: 3.4.1.4.3 Time Info Box Contents