I have a drawing (it’s a hand-written text block, for end credits).
I’d like to center it exactly to the screen.
In fact, I’d like to center various object among each other (in this case, different blocks of text).
How do I do this (otherwise than by eye)?
I’d recommend turning on the drawing grid and then turn on your Snap to Grid option, and snap it to the centre of the grid.
You can also try Snap and Align, to align one object to another object.