--- a/Object.st	Mon Mar 06 09:56:20 2006 +0100
+++ b/Object.st	Mon Mar 06 09:57:09 2006 +0100
@@ -2868,8 +2868,6 @@
 assert:aBooleanOrBlock
     "fail, if the argument is not true and report an error"
 
-    "{ Pragma: +optSpace }"
-
     aBooleanOrBlock == true ifTrue:[^ self].
     "/ could still be a block or false.
     self 
@@ -8270,8 +8268,8 @@
 !
 
 isBehavior
-    "return true, if the receiver is some kind of class (i.e. behavior);
-     false is returned here - the method is only redefined in Behavior."
+    "return true, if the receiver is describing another objects behavior.
+     False is returned here - the method is only redefined in Behavior."
 
     ^ false
 !
@@ -8670,8 +8668,8 @@
 !
 
 isNameSpace
-    "return true, if this is a nameSpace.
-     false is returned here - the method is only redefined in Namespace."
+    "return true, if the receiver is a nameSpace.
+     False is returned here - the method is only redefined in Namespace."
 
     ^ false
 
@@ -8690,7 +8688,9 @@
 !
 
 isNil
-    "return true, if the receiver is nil.
+    "Return true, if the receiver is nil.
+     Because isNil is redefined in UndefinedObject,
+     the receiver is definitely not nil here, so unconditionally return false.
      Notice:
         This method is open coded (inlined) by the compiler(s)
         - redefining it may not work as expected."
@@ -8858,7 +8858,9 @@
 !
 
 notNil
-    "return true, if the receiver is not nil.
+    "Return true, if the receiver is not nil.
+     Because notNil is redefined in UndefinedObject,
+     the receiver is definitely not nil here, so unconditionally return true.
      Notice:
         This method is open coded (inlined) by the compiler(s)
         - redefining it may not work as expected."
@@ -9323,7 +9325,7 @@
 !Object class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libbasic/Object.st,v 1.548 2006-03-03 19:33:58 stefan Exp $'
+    ^ '$Header: /cvs/stx/stx/libbasic/Object.st,v 1.549 2006-03-06 08:57:09 cg Exp $'
 ! !
 
 Object initialize!