I don’t think it matters (unless your screen is somehow 32K characters wide):
§8.7.2.3: This position is given in characters in the form (row, column), with (1,1) at the top left. … It is illegal to move the cursor outside the current size of the upper window.
ZVM ignores any calls to @set_cursor that are outside the screen width (it does increase the screen height if the row is too large though.) On my phone the screen is only 56 characters wide, resulting in this title page for Aisle.
Making it clip rather than wrap to the next line is something I am considering changing, based on this discussion.