exception: use natural explanatory style

src/Application/exceptions.php

@@ -13,37 +13,38 @@
 
 
 /**
- * The exception that is thrown when user attempts to terminate the current presenter or application.
- * This is special "silent exception" with no error message or code.
+ * A silent exception used to terminate the current presenter or application.
+ * Contains no error message or code.
  */
 class AbortException extends \LogicException
 {
 }
 
+
 /** @internal */
 final class SwitchException extends AbortException
 {
 }
 
 
 /**
- * Application fatal error.
+ * Fatal error in the application.
  */
 class ApplicationException extends \Exception
 {
 }
 
 
 /**
- * The exception that is thrown when a presenter cannot be loaded.
+ * The requested presenter cannot be loaded.
  */
 class InvalidPresenterException extends \Exception
 {
 }
 
 
 /**
- * The exception that indicates client error with HTTP code 4xx.
+ * The request resulted in HTTP 4xx client error.
  */
 class BadRequestException extends \LogicException
 {
@@ -65,7 +66,7 @@ public function getHttpCode(): int
 
 
 /**
- * Forbidden request exception - access denied.
+ * Access to the requested resource is forbidden.
  */
 class ForbiddenRequestException extends BadRequestException
 {