diff --git a/game/campaign.tex b/game/campaign.tex
index 3b59603..4226062 100644
--- a/game/campaign.tex
+++ b/game/campaign.tex
@@ -2,6 +2,7 @@
 
 % Geography: World, Kingdom, City, Quarter, Buiilding, Room
 % Time: Year, Month, Week, Day, Hour, Turn
+% Sessions: Session 0, Session X, Adventure, Arc, Campaign, World
 
 \section*{Campaign}
 
@@ -10,3 +11,4 @@
 \section*{Session}
 
 \section*{Encounter}
+