I've been away from DS for a few months and despite searching through help and trying to search this web site (search borken?), I can't figure out how to pan a viewport.

From a sheet, I've tried:

• Selecting a viewport on a sheet and panning using the middle mouse button (pans entire sheet)
• Selecting a viewport on a sheet and entering "-P" then selscting two points within viewport (pans entire sheet).
• Typing viewport, lock, off, selecting viewport, press enter, then tryinng the above commands.
• Create a new viewport and pan it. I can create one, but it shows my entire model.

None of my layers are frozen, locked or not visible.