At least one drawing is selected.
A drawing is under the pointer without being selected. Copy, cut, duplicate and delete act on it when nothing is selected; nudge does not, because moving something the user has not picked reads as a glitch.
OptionalplacingA tool is armed. Escape, Enter and Backspace then belong to placement (cancel, finish, drop the last anchor) rather than to the selection.
The user is typing (a text box is open). Every key is theirs.