See Also
The thumbnail view allows the user to see an overview of the oneline diagram in a smaller window in a specified location on the oneline diagram. The thumbnail view is useful when the user has zoomed in to a specific area of the oneline diagram, but still wants to see what part of the system they are observing on a larger scale as they pan around the diagram. The other application is to observe a more detailed part of the system in the thumbnail view as the user moves the cursor over the oneline diagram. The thumbnail view is not visible by default, but can be set up and displayed from the Oneline Display Options dialog. The options for the thumbnail view are:
If checked, the thumbnail view will be visible in the specified corner of the oneline diagram.
Size of ThumbNail View
The size of the thumbnail view as a percentage of the size of the oneline diagram.
Zoom level of Thumbnail View
The amount to multiply the oneline diagram zoom level for display in the thumbnail view. The higher the multiplier, the more of the diagram you will see in the thumbnail view. You can instead indicate that the thumbnail view should display the diagram at a specified zoom level rather than a dynamically scaled zoom level based on the current diagram's zoom level.
Location
Choose the location on the oneline diagram in which the thumbnail view is to appear.
Border Width in Pixels
The pixel thickness of the border around the thumbnail view.
Background Color
If Use One-line Background Color is checked, the thumbnail background color will be the same as the oneline diagram. If it is not checked, then a different thumbnail background color can be selected by clicking on the colored box next to the Use Custom Background Color label.
Thumbnail view follows mouse cursor
This setting is very useful when is combined with the Zoom Level. Using a low multiplier and checking the Thumbnail view follows mouse cursor box will show a more detailed part of the system over which the cursor is being moved.
Percent Transparent
This setting allows you to make the thumbnail window completely opaque, completely transparent, or some measure in between. The more transparent the thumbnail window, the more detail of the underlying oneline diagram is visible through the thumbnail window.
Many of these same options are available on the Thumb Nail options menufound on the Options ribbon tab.