Index: src/foundation-compat.m
==================================================================
--- src/foundation-compat.m
+++ src/foundation-compat.m
@@ -12,12 +12,18 @@
  * Public License, either version 2 or 3, which can be found in the file
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
-/* FIXME:
- * Kommentar warum benötigt
+/*
+ * This file replaces NSAutoreleasePool with OFAutoreleasePool when it is
+ * linked. This is done so there is no conflict because OFBlocks are used
+ * (blocks are OFBlocks as soon as ObjFW is linked). An application expecting
+ * an NSBlock, but getting an OFBlock because ObjFW is linked, would fail to
+ * autorelease the block otherwise, as the block would be in an
+ * OFAutoreleasePool. By replacing NSAutoreleasePool with OFAutoreleasePool,
+ * the application will still properly free the autoreleased block.
  */
 
 #include "config.h"
 
 #import <objc/runtime.h>