diff --git a/timer.nut b/timer.nut
index 7bf0f29..723b9c1 100644
--- a/timer.nut
+++ b/timer.nut
@@ -287,6 +287,7 @@ class Timer
         {
             local entindex = ply.entindex();
 
+            // Dead or spectator?
             if (!ply.IsAlive() ||
                 (ply.GetTeam() != Constants.ETFTeam.TF_TEAM_RED &&
                 ply.GetTeam() != Constants.ETFTeam.TF_TEAM_BLUE)
@@ -299,6 +300,7 @@ class Timer
                 continue;
             }
 
+            // New player to track?
             if (!(entindex in this.players))
             {
                 this.players[entindex] <- PlayerState(); 
@@ -311,9 +313,10 @@ class Timer
 
             local prev_zone_index = this.players[entindex].prev_zone_index;
             local start_time = this.players[entindex].start_time;
+
             if (prev_zone_index < 0)
             {
-                // Not yet in start zone, only check the first.
+                // Not yet in start zone, only check if we are entering it.
                 if (this.zones[0].Clips(ply))
                 {
                     this.players[entindex].prev_zone_index = 0;
@@ -345,7 +348,8 @@ class Timer
                     continue;
                 }
                 
-                // Check if entering the next zone.
+                // Check if entering any later zone.
+                // We allow skipping zones on purpose here.
                 for (local i = prev_zone_index + 1; i < this.zones.len(); i++)
                 {
                     if (this.zones[i].Clips(ply))
@@ -385,6 +389,8 @@ class Timer
 // Commands
 // --------------------------------
 
+// Build a new zone!
+// You should call this 3 times to pick the bounds.
 ::CreateZone <- function()
 {
     if ("zone_builder" in getroottable())
@@ -398,6 +404,7 @@ class Timer
     }
 }
 
+// Draw all created zones.
 ::DrawZones <- function()
 {
     if ("cool_timer" in getroottable())
@@ -409,6 +416,7 @@ class Timer
     }
 }
 
+// Remove the last zone.
 ::RemoveZone <- function()
 {
     if ("cool_timer" in getroottable())
@@ -417,6 +425,7 @@ class Timer
     }
 }
 
+// Remove all the zones.
 ::ClearZones <- function()
 {
     if ("cool_timer" in getroottable())
@@ -425,6 +434,7 @@ class Timer
     }
 }
 
+// Debug print zone bounds to console.
 ::DumpZones <- function()
 {
     if ("cool_timer" in getroottable())