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Rotate View with Viewport
You can find any tool by the Menu Structure HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Menu+Structure
You can find the menu location of any tool by name HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Tools+Mapped+to+Menus
Rotate View with Viewport
You can rotate views by rotating the containing viewport.
First make sure that the Scale is Fixed in the Viewport properties.
Select the viewport.
Rotate the Viewport.
The result is rotated content.