Viewport Editing Tricks. this podcast will show you some tricks to speed up editing viewports.
epodcast194 – Interactively Scaling a Viewport By Dragging
You can’t change the scale of the viewport by interactively scaling it (using the selection tool to drag the corner). But you are allowed to do this to a group. If you make the viewport into a group, then you can and interactively scale it.
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