diff -r 84a039c64a6b -r 0f034b43ac9b Rectangle.st
--- a/Rectangle.st	Fri Nov 24 09:13:05 2017 +0100
+++ b/Rectangle.st	Mon Nov 27 11:34:08 2017 +0100
@@ -456,12 +456,14 @@
 !
 
 extent:aPoint
-    "set the extent from the argument, aPoint with width taken from aPoint x
-     and height taken from aPoint y.
+    "set the extent from the argument, aPoint 
+     with width taken from aPoint x and height taken from aPoint y.
      warning: destructive"
 
     width := aPoint x.
     height := aPoint y
+
+    "Modified (comment): / 27-11-2017 / 10:57:46 / cg"
 !
 
 height
@@ -1041,20 +1043,24 @@
 !
 
 moveBy:aPoint
-    "destructively translate the rectangle by some distance.
+    "destructively translate the rectangle by some distance (keeping extent unchanged).
      sorry for the name inconsistency - but GNU-ST named it that way"
 
     left := left + aPoint x.
     top := top + aPoint y
+
+    "Modified (comment): / 27-11-2017 / 10:42:54 / cg"
 !
 
 moveTo:aPoint
-    "destructively translate the rectangle to have its origin at aPoint."
+    "destructively translate the rectangle to have its origin at aPoint (keeping extent unchanged)."
 
     |diff|
 
     diff := aPoint - self origin.
     self origin:aPoint corner:self corner + diff
+
+    "Modified (comment): / 27-11-2017 / 10:42:48 / cg"
 !
 
 scaleBy:scale
@@ -1094,7 +1100,7 @@
 
 translateBy:amount
     "translate (i.e. move) the receiver rectangle
-     by amount, a Point or Number.
+     by amount, a Point or Number (keeping extent unchanged).
      This is destructive (modifies the receiver, not a copy) and
      should only be used if you know, that you are the exclusive owner
      of the receiver. (use translatedBy if in doubt)"
@@ -1102,12 +1108,12 @@
     |amountPoint|
 
     (amount isMemberOf:Point) ifTrue:[  "type hint to stc"
-	left := left + amount x.
-	top := top + amount y
+        left := left + amount x.
+        top := top + amount y
     ] ifFalse:[
-	amountPoint := amount asPoint.
-	left := left + amountPoint x.
-	top := top + amountPoint y
+        amountPoint := amount asPoint.
+        left := left + amountPoint x.
+        top := top + amountPoint y
     ]
 
     "
@@ -1122,6 +1128,8 @@
      r2 := r1 translateBy:10.
      r1
     "
+
+    "Modified (comment): / 27-11-2017 / 10:43:12 / cg"
 ! !
 
 !Rectangle methodsFor:'displaying'!