diff --git a/src/JsonSchema/Constraints/Constraint.php b/src/JsonSchema/Constraints/Constraint.php
index e0e044bc..14d4de17 100644
--- a/src/JsonSchema/Constraints/Constraint.php
+++ b/src/JsonSchema/Constraints/Constraint.php
@@ -24,16 +24,35 @@ abstract class Constraint extends BaseConstraint implements ConstraintInterface
 {
     protected $inlineSchemaProperty = '$schema';
 
-    const CHECK_MODE_NONE =             0x00000000;
-    const CHECK_MODE_NORMAL =           0x00000001;
-    const CHECK_MODE_TYPE_CAST =        0x00000002;
-    const CHECK_MODE_COERCE_TYPES =     0x00000004;
-    const CHECK_MODE_APPLY_DEFAULTS =   0x00000008;
-    const CHECK_MODE_EXCEPTIONS =       0x00000010;
-    const CHECK_MODE_DISABLE_FORMAT =   0x00000020;
-    const CHECK_MODE_EARLY_COERCE =     0x00000040;
-    const CHECK_MODE_ONLY_REQUIRED_DEFAULTS   = 0x00000080;
-    const CHECK_MODE_VALIDATE_SCHEMA =  0x00000100;
+    /** Bitwise value used to specify no constraint validation options */
+    const CHECK_MODE_NONE = 0x00000000;
+
+    /** Bitwise value used to specify normal constraint validation options */
+    const CHECK_MODE_NORMAL = 0x00000001;
+
+    /** Bitwise value used to specify the value typecasting constraint validation option */
+    const CHECK_MODE_TYPE_CAST = 0x00000002;
+
+    /** Bitwise value used to specify the value type coercion constraint validation option */
+    const CHECK_MODE_COERCE_TYPES = 0x00000004;
+
+    /** Bitwise value used to specify the default value constraint validation option */
+    const CHECK_MODE_APPLY_DEFAULTS = 0x00000008;
+
+    /** Bitwise value used to specify the exception handling constraint validation option */
+    const CHECK_MODE_EXCEPTIONS = 0x00000010;
+
+    /** Bitwise value used to specify the disable format constraint validation option */
+    const CHECK_MODE_DISABLE_FORMAT = 0x00000020;
+
+    /** Bitwise value used to specify the early value type coercion constraint validation option */
+    const CHECK_MODE_EARLY_COERCE = 0x00000040;
+
+    /** Bitwise value used to specify the default value only for required properties constraint validation option */
+    const CHECK_MODE_ONLY_REQUIRED_DEFAULTS = 0x00000080;
+
+    /** Bitwise value used to specify the schema validation constraint validation option */
+    const CHECK_MODE_VALIDATE_SCHEMA = 0x00000100;
 
     /**
      * Bubble down the path
diff --git a/src/JsonSchema/Constraints/Factory.php b/src/JsonSchema/Constraints/Factory.php
index c9296385..b4ed39e6 100644
--- a/src/JsonSchema/Constraints/Factory.php
+++ b/src/JsonSchema/Constraints/Factory.php
@@ -11,7 +11,6 @@
 
 use JsonSchema\Constraints\Constraint;
 use JsonSchema\Exception\InvalidArgumentException;
-use JsonSchema\Exception\InvalidConfigException;
 use JsonSchema\SchemaStorage;
 use JsonSchema\SchemaStorageInterface;
 use JsonSchema\Uri\UriRetriever;
diff --git a/src/JsonSchema/Exception/ExceptionInterface.php b/src/JsonSchema/Exception/ExceptionInterface.php
index 439bd277..93969c8f 100644
--- a/src/JsonSchema/Exception/ExceptionInterface.php
+++ b/src/JsonSchema/Exception/ExceptionInterface.php
@@ -1,7 +1,21 @@
 <?php
 
+/*
+ * This file is part of the JsonSchema package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace JsonSchema\Exception;
 
+/**
+ * General Interface for JSON Schema Exceptions
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
+ */
 interface ExceptionInterface
 {
 }
diff --git a/src/JsonSchema/Exception/InvalidArgumentException.php b/src/JsonSchema/Exception/InvalidArgumentException.php
index cabfa680..4ba39bcd 100644
--- a/src/JsonSchema/Exception/InvalidArgumentException.php
+++ b/src/JsonSchema/Exception/InvalidArgumentException.php
@@ -10,7 +10,11 @@
 namespace JsonSchema\Exception;
 
 /**
- * Wrapper for the InvalidArgumentException
+ * Invalid arguments found in constraint configuration
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
  */
 class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
 {
diff --git a/src/JsonSchema/Exception/InvalidConfigException.php b/src/JsonSchema/Exception/InvalidConfigException.php
deleted file mode 100644
index a48d6da0..00000000
--- a/src/JsonSchema/Exception/InvalidConfigException.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-
-/*
- * This file is part of the JsonSchema package.
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace JsonSchema\Exception;
-
-/**
- * Wrapper for the ResourceNotFoundException
- */
-class InvalidConfigException extends RuntimeException
-{
-}
diff --git a/src/JsonSchema/Exception/InvalidSchemaException.php b/src/JsonSchema/Exception/InvalidSchemaException.php
index c1209958..e3de0538 100644
--- a/src/JsonSchema/Exception/InvalidSchemaException.php
+++ b/src/JsonSchema/Exception/InvalidSchemaException.php
@@ -10,7 +10,11 @@
 namespace JsonSchema\Exception;
 
 /**
- * Wrapper for the InvalidSchemaMediaType
+ * Invalid JSON schema provided
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
  */
 class InvalidSchemaException extends RuntimeException
 {
diff --git a/src/JsonSchema/Exception/InvalidSchemaMediaTypeException.php b/src/JsonSchema/Exception/InvalidSchemaMediaTypeException.php
index bcac26f4..5df0d00b 100644
--- a/src/JsonSchema/Exception/InvalidSchemaMediaTypeException.php
+++ b/src/JsonSchema/Exception/InvalidSchemaMediaTypeException.php
@@ -10,7 +10,11 @@
 namespace JsonSchema\Exception;
 
 /**
- * Wrapper for the InvalidSchemaMediaType
+ * Invalid JSON schema media type provided
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
  */
 class InvalidSchemaMediaTypeException extends RuntimeException
 {
diff --git a/src/JsonSchema/Exception/InvalidSourceUriException.php b/src/JsonSchema/Exception/InvalidSourceUriException.php
deleted file mode 100644
index 37db1216..00000000
--- a/src/JsonSchema/Exception/InvalidSourceUriException.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-
-/*
- * This file is part of the JsonSchema package.
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace JsonSchema\Exception;
-
-/**
- * Wrapper for the InvalidSourceUriException
- */
-class InvalidSourceUriException extends InvalidArgumentException
-{
-}
diff --git a/src/JsonSchema/Exception/JsonDecodingException.php b/src/JsonSchema/Exception/JsonDecodingException.php
index c7719828..084ab298 100644
--- a/src/JsonSchema/Exception/JsonDecodingException.php
+++ b/src/JsonSchema/Exception/JsonDecodingException.php
@@ -10,7 +10,11 @@
 namespace JsonSchema\Exception;
 
 /**
- * Wrapper for the JsonDecodingException
+ * Wrapper for JSON decoding constants to improve user messaging
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
  */
 class JsonDecodingException extends RuntimeException
 {
diff --git a/src/JsonSchema/Exception/ResourceNotFoundException.php b/src/JsonSchema/Exception/ResourceNotFoundException.php
index e639ba32..2480f23d 100644
--- a/src/JsonSchema/Exception/ResourceNotFoundException.php
+++ b/src/JsonSchema/Exception/ResourceNotFoundException.php
@@ -10,7 +10,11 @@
 namespace JsonSchema\Exception;
 
 /**
- * Wrapper for the ResourceNotFoundException
+ * Wrapper for JSON decoding constants to improve user messaging
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
  */
 class ResourceNotFoundException extends RuntimeException
 {
diff --git a/src/JsonSchema/Exception/RuntimeException.php b/src/JsonSchema/Exception/RuntimeException.php
index 8a2a9006..faede63d 100644
--- a/src/JsonSchema/Exception/RuntimeException.php
+++ b/src/JsonSchema/Exception/RuntimeException.php
@@ -10,7 +10,11 @@
 namespace JsonSchema\Exception;
 
 /**
- * Wrapper for the RuntimeException
+ * Wrapper for RuntimeException
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
  */
 class RuntimeException extends \RuntimeException implements ExceptionInterface
 {
diff --git a/src/JsonSchema/Exception/UnresolvableJsonPointerException.php b/src/JsonSchema/Exception/UnresolvableJsonPointerException.php
index 5f49e2f0..e115d41e 100644
--- a/src/JsonSchema/Exception/UnresolvableJsonPointerException.php
+++ b/src/JsonSchema/Exception/UnresolvableJsonPointerException.php
@@ -10,9 +10,11 @@
 namespace JsonSchema\Exception;
 
 /**
- * @package JsonSchema\Exception
+ * A pointer provided in the JSON schema is unresolvable
  *
- * @author Joost Nijhuis <jnijhuis81@gmail.com>
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
  */
 class UnresolvableJsonPointerException extends InvalidArgumentException
 {
diff --git a/src/JsonSchema/Exception/UriResolverException.php b/src/JsonSchema/Exception/UriResolverException.php
index 13b73033..1cdaaafd 100644
--- a/src/JsonSchema/Exception/UriResolverException.php
+++ b/src/JsonSchema/Exception/UriResolverException.php
@@ -10,7 +10,11 @@
 namespace JsonSchema\Exception;
 
 /**
- * Wrapper for the UriResolverException
+ * A URI provided in the JSON schema is unresolvable
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
  */
 class UriResolverException extends RuntimeException
 {
diff --git a/src/JsonSchema/Exception/ValidationException.php b/src/JsonSchema/Exception/ValidationException.php
index 65d8849e..157115e0 100644
--- a/src/JsonSchema/Exception/ValidationException.php
+++ b/src/JsonSchema/Exception/ValidationException.php
@@ -9,6 +9,13 @@
 
 namespace JsonSchema\Exception;
 
+/**
+ * A JSON schema validation error detailing pointer and constraint information
+ *
+ * @package justinrainbow\json-schema
+ *
+ * @license MIT
+ */
 class ValidationException extends RuntimeException
 {
 }
diff --git a/src/JsonSchema/Validator.php b/src/JsonSchema/Validator.php
index 092e45b8..85e56d03 100644
--- a/src/JsonSchema/Validator.php
+++ b/src/JsonSchema/Validator.php
@@ -11,7 +11,6 @@
 
 use JsonSchema\Constraints\BaseConstraint;
 use JsonSchema\Constraints\Constraint;
-use JsonSchema\Exception\InvalidConfigException;
 use JsonSchema\SchemaStorage;
 
 /**
@@ -25,12 +24,20 @@
  */
 class Validator extends BaseConstraint
 {
+    /** Media type for JSON Schema */
     const SCHEMA_MEDIA_TYPE = 'application/schema+json';
 
-    const ERROR_NONE                    = 0x00000000;
-    const ERROR_ALL                     = 0xFFFFFFFF;
-    const ERROR_DOCUMENT_VALIDATION     = 0x00000001;
-    const ERROR_SCHEMA_VALIDATION       = 0x00000002;
+    /** Bitwise value used to specify no error context */
+    const ERROR_NONE = 0x00000000;
+
+    /** Bitwise value used to specify all error contexts */
+    const ERROR_ALL = 0xFFFFFFFF;
+
+    /** Bitwise value used to specify JSON document validation error context */
+    const ERROR_DOCUMENT_VALIDATION = 0x00000001;
+
+    /** Bitwise value used to specify JSON schema validation error context */
+    const ERROR_SCHEMA_VALIDATION = 0x00000002;
 
     /**
      * Validates the given data against the schema and returns an object containing the results.