What does the x2 icon on a Contract action tile mean, and can I double a fragment tile?

Question

Accepted Answer

X2 doubles the reward of the Contract space the Contract goes on, not the number of Contracts; you still fulfil only one, before, between or after the tile's actions. A double reward that grants an action fragment (half tile) still gives only one, since you can hold only one fragment, used once before it returns to the supply.

Nucleum

What does the x2 icon on a Contract action tile mean, and can I double a fragment tile?