Toolbar Buttons
The Toolbar is floating and can be placed anywhere on the screen, vertical or horizontal.
Note the "grabber" symbol at the far right side of the toolbar. Use this handle to drag the toolbar wherever you want it. The default position is horizontal and docked top left.
It "snaps" to the edges. Right click on the grabber, and the toolbar shifts to vertical format. On Windows (at least), the toolbar dims down transparently until you roll over it.
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When a toggle button is pressed, it changes and becomes slightly larger, by adding an outer frame, and grayer. For example
Tracking off
, tracking on
.
A brief explanation of the use of each button is available by just hovering with the cursor
over a button. 
From left to right:
Zoom In (Zoom In & Out)
Zoom Out (Zoom In & Out)
Scale Next Chart Down (Scaling Charts) 1
Scale Next Chart Up (Scaling Charts) 1
Create Route (Routes and Marks)
Find/Follow Boat (Auto Follow and Display Orientation)
Launch Toolbox(Toolbox Settings)
Show Text Labels on Vector Chart.(Vector Chart Display)
Show AIS Targets 2 3 (AIS)
Show/Hide Currents On Chart (Tides and Currents)
Show/Hide Tides On Chart (Tides and Currents)
Print 4
Route/Track/Waypoints/Layer- Manager.(The Route Manager and Data Import/Export)
Toggle Track On/Off 4 (Ship Track)
Adjust Screen Brightness for Dawn/Dusk and Night viewing.(Night Navigation)
Drop Man Over Board(MOB) marker(Man Over Board)
About OpenCPN and Help File
Show/hide the Dashboard Plugin 4 (The Dashboard Plugin)
Grib Overlay Plugin 4 (GRIB Weather Plugin)
A separate GPS status and Chart Orientation Status is normally in the upper right corner of the display, unless the floating ToolBar covers this position. Then the "Staus-bar" will be moved to the lower left corner, were it will stay, unless the main ToolBar iis moved to cover this position, in which case the "Status Bar" goes back to the default position.
Course Up/North Up 3 (Auto Follow and Display Orientation)
Note 1: These icons are "grayed out" when only CM93 vector-charts are available, as the feature makes no sense.
Note 2: AIS button is available if an Ais Data Port is defined in the ToolBox AIS Tab.
Note 3: These icons changes, depending on status.
Note 4: These icons can be enabled or disabled from the ToolBox
Printer 'ToolBox-Settings-Show Printing Icon' to hide or un-hide.
Tracks 'ToolBox-Etc.-Show Track Icon' to hide or un-hide.
Grib Plugin. Activate in Toolbox-Plugins by first clicking the feature and then "enable".
Dashboard plugin. Activate in Toolbox-Plugins by first clicking the feature and then "enable".