diff --git a/validation/src/check.rs b/validation/src/check.rs
index 3a99b6f..e8d337f 100644
--- a/validation/src/check.rs
+++ b/validation/src/check.rs
@@ -309,19 +309,19 @@ pub struct MapCheck<'a>{
 
 impl<'a> ModelInfo<'a>{
 	fn check(self)->MapCheck<'a>{
-		// check class is exactly "Model"
+		// Check class is exactly "Model"
 		let model_class=StringCheckContext{
 			observed:self.model_class,
 			expected:"Model",
 		}.check(());
 
-		// check model name is snake case
+		// Check model name is snake case
 		let model_name=StringCheckContext{
 			observed:self.model_name,
 			expected:self.model_name.to_snake_case(),
 		}.check(());
 
-		// check display name is not empty and has title case
+		// Check display name is not empty and has title case
 		let display_name=self.map_info.display_name.map(|display_name|{
 			StringEmptyCheck::new(display_name).map(|display_name|StringCheckContext{
 				observed:display_name,
@@ -329,10 +329,10 @@ impl<'a> ModelInfo<'a>{
 			}.check(display_name))
 		});
 
-		// check Creator is not empty
+		// Check Creator is not empty
 		let creator=self.map_info.creator.map(StringEmptyCheck::new);
 
-		// check GameID (model name was prefixed with bhop_ surf_ etc)
+		// Check GameID (model name was prefixed with bhop_ surf_ etc)
 		let game_id=self.map_info.game_id;
 
 		// MapStart must exist
@@ -349,22 +349,23 @@ impl<'a> ModelInfo<'a>{
 			Err(())
 		};
 
-		// check that at least one end zone exists for each start zone.
+		// Check that at least one finish zone exists for each start zone.
+		// This also checks that there are no finish zones without a corresponding start zone.
 		let mode_finish_counts=SetDifferenceCheckContextAtLeastOne::new(self.counts.mode_finish_counts)
 			.check(&self.counts.mode_start_counts);
 
-		// check that there are no anticheat zones that have no corresponding start zone.
-		// modes are allowed to have 0 anticheat zones.
+		// Check that there are no anticheat zones without a corresponding start zone.
+		// Modes are allowed to have 0 anticheat zones.
 		let mode_anticheat_counts=SetDifferenceCheckContextAllowNone::new(self.counts.mode_anticheat_counts)
 			.check(&self.counts.mode_start_counts);
 
-		// there must be exactly one start zone for every mode in the map.
+		// There must be exactly one start zone for every mode in the map.
 		let mode_start_counts=DuplicateCheckContext(self.counts.mode_start_counts).check();
 
-		// there must be exactly one of any perticular spawn id in the map.
+		// There must be exactly one of any perticular spawn id in the map.
 		let spawn_counts=DuplicateCheckContext(self.counts.spawn_counts).check();
 
-		// there must be exactly one of any perticular wormhole out id in the map.
+		// There must be exactly one of any perticular wormhole out id in the map.
 		let wormhole_out_counts=DuplicateCheckContext(self.counts.wormhole_out_counts).check();
 
 		MapCheck{