diff --git a/src/classes/validationsingle.gd b/src/classes/validationsingle.gd
index bc2db1b..664daa9 100644
--- a/src/classes/validationsingle.gd
+++ b/src/classes/validationsingle.gd
@@ -30,7 +30,7 @@ var parent: Node
 ## [b]Note: [i]Don't modify.[/i][/b]
 var data  # This is the only instance where we don't want to define what type this variable should have
 
-## All rules to evalute in [method evaluate].[br]
+## All rules to evaluate in [method evaluate].[br]
 ## [b]Note: [i]Don't modify.[/i][/b]
 var rules: Array[Dictionary]
 ## The amount of failures.[br]
@@ -218,68 +218,94 @@ func evaluate() -> bool:
 	return failures.size() == 0
 
 # +++ types and classes +++
-## Validates if [param data] matches some [enum Variant.Type].
+## Validates if [param data] matches some [enum Variant.Type].[br]
+## Applies to all data types (obviously).
 func matches_type(types: Array[Variant.Type]) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.MATCHES_TYPE, "types": types })
 	return self
 
-## Validates if [param data] matches some class.
+## Validates if [param data] matches some class.[br]
+## Applies to [Object].
 func matches_class(clazz: StringName, exact: bool) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.MATCHES_CLASS, "class": clazz, "exact": exact })
 	return self
 
 # +++ ranges +++
-## Validates if [param data] contains 
+## Validates if [param data] contains the specified integer range.[br]
+## Applies to [int].
 func in_range_int(from: int, to: int) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.IN_RANGE, "matched_against": "integer", "from": from, "to": to })
 	return self
 
+## Validates if [param data] contains the specified float range.[br]
+## Applies to [float].
 func in_range_float(from: float, to: float) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.IN_RANGE, "matched_against": "float", "from": from, "to": to })
 	return self
 
+## Ensures that [param data] is equal to or exceeds the specified integer.[br]
+## Applies to [int].
 func has_minimum_value_int(minimum: int) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.HAS_MINIMUM, "matched_against": "integer", "minimum": minimum })
 	return self
 
+## Ensures that [param data] is under the specified integer.[br]
+## Applies to [int].
 func has_maximum_value_int(maximum: int) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.HAS_MAXIMUM, "matched_against": "integer", "maximum": maximum })
 	return self
 
+## Ensures that [param data] is equal to or exceeds the specified float.[br]
+## Applies to [float].
 func has_minimum_value_float(minimum: float) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.HAS_MINIMUM, "matched_against": "float", "minimum": minimum })
 	return self
 
+## Ensures that [param data] is under the specified float.[br]
+## Applies to [float].
 func has_maximum_value_float(maximum: float) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.HAS_MAXIMUM, "matched_against": "float", "maximum": maximum })
 	return self
 
 # +++ values +++
+## Checks whenether at least one value matches [param data].[br]
+## Applies to all data types.
 func has_values(values: Array) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.HAS_VALUES, "values": values })
 	return self
 
+## Ensures that [param data] contains at least [code]<minimum_matches>[/code] values.[br]
+## Applies to [String] & [StringName].
 func contains(values: Array[String], minimum_matches: int = 1) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.HAS_VALUES, "values": values, "minimum_matches": minimum_matches })
 	return self
 
+## Matches a regular expression against [param data].[br]
+## Applies to [String] & [StringName].
 func matches_regex(regex_string: String) -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.MATCHES_REGEX, "regex_string": regex_string })
 	return self
 
 # +++ empty/null and booleans +++
+## Ensures that [param data] is not empty.[br]
+## Applies to [String] & [StringName] ([code]!= ""[/code]), [int] ([code]!= 0[/code]) and [float] ([code]!= 0.0[/code]).
 func is_not_empty() -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.IS_NOT_EMPTY })
 	return self
 
+## Ensures that [param data] is not [code]null[/code].
 func is_not_null() -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.IS_NOT_NULL })
 	return self
 
+## Ensures that [param data] is normalized.[br]
+## Applies to [Vector2], [Vector3], [Vector4], [Plane] and [Quaternion].
 func is_normalized() -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.IS_NORMALIZED })
 	return self
 
+## Ensures that [param data] is orthonormalized.[br]
+## Applies to [Transform2D], [Transform3D] and [Basis].
 func is_orthonormalized() -> CoreValidationSingle:
 	rules.append({ "type": CoreTypes.ValidationType.IS_ORTHONORMALIZED })
 	return self