Dreadful locker

The entity tile says: “when there are no (symbols) on the entity tile:victory”.

does “entity tile” means the tile where actually the entity stands in?

or the starting entity’s spawn tile, filled with (symbols) at the beginning of the slumber?

if the first case, does the slumber ends as soon as the entity moves to a tile without (symbols) and doesn’t produce new ones before the end of the found?

Or, third option, do we need to remove all the (symbols) from the entire map?