diff --git a/scheme/xlib/color.scm b/scheme/xlib/color.scm
index e621841..ca0cef6 100644
--- a/scheme/xlib/color.scm
+++ b/scheme/xlib/color.scm
@@ -37,11 +37,11 @@
 
 (define (query-colors colormap pixels)
   (let ((res (%query-colors (colormap-Xcolormap colormap)
-			    (vector-map! pixel-Xpixel pixels)
+			    (vector-map! pixel-Xpixel (list->vector pixels))
 			    (display-Xdisplay (colormap-display colormap)))))
-    (vector-map! (lambda (r-g-b)
-		   (apply create-color r-g-b))
-		 res)))
+    (vector->list (vector-map! (lambda (r-g-b)
+				 (apply create-color r-g-b))
+			       res))))
 
 (import-lambda-definition %query-colors (Xcolormap Xpixels Xdisplay)
   "scx_Query_Colors")
diff --git a/scheme/xlib/font.scm b/scheme/xlib/font.scm
index 5b78f0f..57d5671 100644
--- a/scheme/xlib/font.scm
+++ b/scheme/xlib/font.scm
@@ -9,10 +9,10 @@
   "scx_GContext_Font")
 
 (define (list-font-names display pattern)
-  (%list-font-names (display-Xdisplay display)
-		    (if (symbol? pattern)
-			(symbol->string pattern)
-			pattern)))
+  (vector->list (%list-font-names (display-Xdisplay display)
+				  (if (symbol? pattern)
+				      (symbol->string pattern)
+				      pattern))))
 
 (import-lambda-definition %list-font-names (Xdisplay pattern)
   "scx_List_Font_Names")
diff --git a/scheme/xlib/gcontext.scm b/scheme/xlib/gcontext.scm
index 84b1f5d..cea6647 100644
--- a/scheme/xlib/gcontext.scm
+++ b/scheme/xlib/gcontext.scm
@@ -153,7 +153,7 @@
   (%set-dashlist (gcontext-Xgcontext gcontext)
 		 (display-Xdisplay (gcontext-display gcontext))
 		 dash-offset
-		 dash-list))
+		 (list->vector dash-list)))
 
 (import-lambda-definition %set-dashlist (Xgcontext Xdisplay dashoffset dashlist)
   "scx_Set_Gcontext_Dashlist")
@@ -163,7 +163,9 @@
 (define (set-gcontext-clip-rectangles! gcontext x y rectangles ordering)
   (%set-gcontext-clip-rectangles! (gcontext-Xgcontext gcontext)
 				  (display-Xdisplay (gcontext-display gcontext))
-				  x y rectangles ordering))
+				  x y 
+				  (list->vector rectangles)
+				  ordering))
 
 (import-lambda-definition %set-gcontext-clip-rectangles! (Xgcontext Xdisplay x 
 							  y v ord)
diff --git a/scheme/xlib/graphics.scm b/scheme/xlib/graphics.scm
index fc2748b..c4075cb 100644
--- a/scheme/xlib/graphics.scm
+++ b/scheme/xlib/graphics.scm
@@ -63,11 +63,11 @@
 
 ;; _____
 
-(define (draw-points drawable gcontext vector-of-points relative?)
+(define (draw-points drawable gcontext points relative?)
   (%draw-point (display-Xdisplay (drawable-display drawable))
 	       (drawable-Xobject drawable)
 	       (gcontext-Xgcontext gcontext)
-	       vector-of-points
+	       (list->vector points)
 	       relative?))
 
 (import-lambda-definition %draw-points (Xdisplay Xdrawable Xgcontext vec
@@ -90,11 +90,11 @@
 ;; _____
 
 
-(define (draw-lines drawable gcontext vector-of-points relative?)
+(define (draw-lines drawable gcontext points relative?)
   (%draw-lines (display-Xdisplay (drawable-display drawable))
 	       (drawalbe-Xobject drawable)
 	       (gcontext-Xgcontext gcontext)
-	       vector-of-points
+	       (list->vector points)
 	       relative?))
 
 (import-lambda-definition %draw-lines (Xdisplay Xdrawable Xgcontext vec rel)
@@ -102,14 +102,14 @@
 
 ;; _____
 
-;; Note: vector-of-points is a vector which contains a list with 4
+;; Note: points is a list which contains lists with 4
 ;;       integers  in Form: (x1, y1, x2, y2)
 
-(define (draw-segments drawalbe gcontext vector-of-points)
+(define (draw-segments drawalbe gcontext points)
   (%draw-segments (display-Xdisplay (drawable-display drawalbe))
 		  (drawable-Xobject drawable)
 		  (gcontext-Xgcontext gcontext)
-		  vector-of-points))
+		  (list->vector points)))
 
 (import-lambda-definition %draw-segments (Xdisplay Xdrawable Xgcontext vec)
   "Draw_Segments")			 
@@ -136,22 +136,22 @@
   "scx_Fill_Rectangle")
 
 
-(define (draw-rectangles drawable gcontext vector-of-rectangles)
+(define (draw-rectangles drawable gcontext rectangles)
   (%draw-rectangles (display-Xdisplay (drawable-display drawable))
 		    (drawable-Xobject drawable)
 		    (gcontext-Xgcontext gcontext)
-		    vector-of-rectangles))
+		    (list->vector rectangles)))
 
 (import-lambda-definition %draw-rectangles (Xdisplay Xdrawable Xgcontext
 						     vec)
    "scx_Draw_Rectangles")
 
 
-(define (fill-rectangles drawable gcontext vector-of-rectangles)
+(define (fill-rectangles drawable gcontext rectangles)
   (%fill-rectangles (display-Xdisplay (drawable-display drawable))
 		    (drawable-Xobject drawable)
 		    (gcontext-Xgcontext gcontext)
-		    vector-of-rectangles))
+		    (list->vector rectangles)))
 
 (import-lambda-definition %fill-rectangles (Xdisplay Xdrawable Xgcontext
 						     vec)
@@ -179,29 +179,29 @@
 					      w h a1 a2)
    "scx_Fill_Arc")
 
-(define (draw-arcs drawable gcontext vector-of-data)
+(define (draw-arcs drawable gcontext data)
   (%draw-arcs (display-Xdisplay (drawable-display drawable))
 	      (drawable-Xobject drawable)
 	      (gcontext-Xgcontext gcontext)
-	      vector-of-data))
+	      (list->vector data)))
 
 (import-lambda-definition %draw-arcs (Xdisplay Xdrawable Xgcontext vec)
   "scx_Draw_Arcs")
 
-(define (fill-arcs drawable gcontext vector-of-data)
+(define (fill-arcs drawable gcontext data)
   (%fill-arcs (display-Xdisplay (drawable-display drawable))
 	      (drawable-Xobject drawable)
 	      (gcontext-Xgcontext gcontext)
-	      vector-of-data))
+	      (list->vector data)))
 
 (import-lambda-definition %fill-arcs (Xdisplay Xdrawable Xgcontext vec)
   "scx_Fill_Arcs")
 
-(define (fill-polygon drawable gcontext vector-of-points relative? shape)
+(define (fill-polygon drawable gcontext points relative? shape)
   (%fill-polygon (display-Xdisplay (drawable-display drawable))
 		 (drawable-Xobject drawable)
 		 (gcontext-Xgcontext gcontext)
-		 vector-of-points relative? shape))
+		 (list->vector points) relative? shape))
 
 (import-lambda-definition %fill-polygon (Xdisplay Xdrawable Xgcontext
 						  vec relative shape)
diff --git a/scheme/xlib/property.scm b/scheme/xlib/property.scm
index 4ef66ec..07c3845 100644
--- a/scheme/xlib/property.scm
+++ b/scheme/xlib/property.scm
@@ -38,9 +38,9 @@
 ; ---   RETURN: vector of atoms 
 
 (define (list-properties window)
-  (let ((atom (%list-properties (display-Xdisplay (window-display window))
-				(window-Xwindow window))))
-    (vector-map! make-atom atom)))
+  (let ((atoms (%list-properties (display-Xdisplay (window-display window))
+				 (window-Xwindow window))))
+    (vector->list (vector-map! make-atom atoms))))
 
 
 (import-lambda-definition %list-properties (Xdisplay Xwindow)
diff --git a/scheme/xlib/text.scm b/scheme/xlib/text.scm
index 79ed2b1..c333944 100644
--- a/scheme/xlib/text.scm
+++ b/scheme/xlib/text.scm
@@ -50,7 +50,7 @@
 		      (append (reverse
 			       (mixed-text->pure-text (string->list e)))
 			      rev-list))
-		     (else (error "wrong element in list" list e)))))))))
+		     (else (error "wrong element in text list" list e)))))))))
 
 ; --- separate-fonts converts a list of mixed types (including fonts) like this:
 ;     (13 "abc" font 'abc) -> ((13 "abc") font ('abc)) or
diff --git a/scheme/xlib/window.scm b/scheme/xlib/window.scm
index 079b66d..4e59402 100644
--- a/scheme/xlib/window.scm
+++ b/scheme/xlib/window.scm
@@ -283,9 +283,9 @@
     (list
      (make-window (vector-ref res 0) display #f)
      (make-window (vector-ref res 1) display #f)
-     (vector-map! (lambda (Xwindow)
-		    (make-window Xwindow display #f))
-		  (vector-ref res 2)))))
+     (vector->list (vector-map! (lambda (Xwindow)
+				  (make-window Xwindow display #f))
+				(vector-ref res 2))))))
 
 (import-lambda-definition %query-tree (Xwindow Xdisplay)
   "scx_Query_Tree")