Navigation Bar Menu
![Navigation Bar Menu](https://az589779.vo.msecnd.net/images/doc08/drex_navigation_bar_menu_screen.png)
Right clicking on the log level navigation bar will display the navigation bar context menu.
![1](https://az589779.vo.msecnd.net/images/doc08/drex_bullet_1.png)
Filter Before
![1. Filter Before](https://az589779.vo.msecnd.net/images/doc08/drex_navigation_bar_menu_control_1.png)
Creates a date time filter which displays everything which occurred before the selected point.
![2](https://az589779.vo.msecnd.net/images/doc08/drex_bullet_2.png)
Filter After
![2. Filter After](https://az589779.vo.msecnd.net/images/doc08/drex_navigation_bar_menu_control_2.png)
Creates a date time filter which displays everything which occurred after the selected point.
![3](https://az589779.vo.msecnd.net/images/doc08/drex_bullet_3.png)
Zoom In
![3. Zoom In](https://az589779.vo.msecnd.net/images/doc08/drex_navigation_bar_menu_control_3.png)
Zooms in on the currently selected point. In order to zoom in LogViewPlus will create a date time filter encompassing roughly 10% of the current view with the selected point in the middle of that calculated time range.
![4](https://az589779.vo.msecnd.net/images/doc08/drex_bullet_4.png)
Bar Size
![4. Bar Size](https://az589779.vo.msecnd.net/images/doc08/drex_navigation_bar_menu_control_4.png)
Sets the width of the Navigation Bar. Three sizes are supported: Small, Medium and Large.
![5](https://az589779.vo.msecnd.net/images/doc08/drex_bullet_5.png)
Tail Log File
![5. Tail Log File](https://az589779.vo.msecnd.net/images/doc08/drex_navigation_bar_menu_control_5.png)
The tail log file command allows you to start or stop monitoring the current file for changes. You can also enable auto-scroll from the navigation bar by selecting the bottom of the bar. Auto-scroll can only be enabled if the log file is currently in tail mode.