Tribute condition

wiki/Player-Conditions.md

@@ -74,6 +74,7 @@ The game manages these conditions, but you are able to adjust the value in conve
 * `"event: <event name>"`, where `<event name>` is replaced with the name of any event. This is set whenever an event is applied.
 * `"reputation: <government>"` is set to your current reputation with the given government, rounded down to a whole number.
 * `"combat rating"` is your current combat rating (based on the strength of all the ships your fleet has disabled).
+* `"tribute: <planet>"` is the amount of tribute that you are receiving from the given planet.
 * `"global: <condition>"` is any condition which gets set in the "global conditions.txt" file. Global conditions can be set and accessed by all player save files. **(v. 0.10.0)**
 
 ### Read-only