Uncovering Clues

Prelude: If your Flagship is at a planet with no Clue token, you may spend 1 resource that is different from all planets in its cluster to make the player to your right place 1 Clue token at the planet. Gain 1 resource of the planet type for each city there, and place 2 ships there for each starport there.

A "Check" Clue means the planet is either in the right cluster or it has the correct ID symbol (//).

An "X" Clue means the planet is not in the right cluster and does not have the correct ID symbol (//).

A Portal token means that you found the Portal! (You complete your objective.)