When working with frames in a document, there are some default combinations available which are described here.
When at least one frame is selected, you can move it using the [Arrow keys].
moves selected frames 1 pixel into the relevant direction, continuously.
moves selected frames 8 pixels into the relevant direction, continuously.
Use mouse click + [Control] everywhere in a document window, or in an inspector window, in order to open a context menu which lists all supported functions for the clicked area.
If you move a frame with the mouse while pressing [Option], the frame will be copied, not moved.
If you move a frame with the mouse while pressing [Shift], the whole frame will be moved in default directions only (e.g. horizontally, vertically, 45 degrees up or down).
If you press [Option] while moving a frame grab point, the frame will be resized proportionally, with the center of the frame remaining fixed on the page. (The corresponding frame grab point on the other side of the frame will be moved too, but in the opposite direction.) When the movements overlap the frame borders, the frame will be mirrored also. The moving of the grab point can be combined with the [Shift] key, too (see below).
When you press [Shift] while moving a frame grab point, the frame will be resized proportionally, with the diagonally opposite grab point ramaining fixed on the page. When the movements overlap the frame borders, the frame will be mirrored also. The moving of the grab point can be combined with the [Option] key, too (see above).
[This list is guaranteed to be incomplete.]
