Perhaps I have done something inadvertently.

I am in an Excel workbook and I appear to be in the middle of selecting
a block of cells. Everytime I move the cursor, the cell selection area
changes. I can't Esc out, or use the Enter key. Mousing over the
menu, the menu does not respond.

Rather silly really, but I desperately need to use this workbook and
nothing seems to function. Even when the cursor is moving over the
menu items, the cells selected in the workbook area still seems to be
changing. I can't use the menu - the arrow keys don't work.

Does anyone know how to "get out" of whatever selection process is
operating. (And can you tell me what I might have done to get into
this so I don't do it again?)

Thanks,

Stephanie.