--- a/XWorkstation.st	Fri Oct 09 18:18:17 2015 +0200
+++ b/XWorkstation.st	Fri Oct 09 18:18:29 2015 +0200
@@ -1611,6 +1611,16 @@
      to be used as paint color.
      True returned here - X has no trouble with any mask."
 
+    ^ true
+
+    "Created: / 4.5.1999 / 12:16:43 / cg"
+!
+
+supportsMaskedDrawingWithOffset:aForm
+    "return true, if the device allows the given form pixmap
+     to be used as paint color with a viewOrigin offset.
+     True returned here - X has no trouble with any mask,except for XQuartz, which has."
+
     "XQuartz seems to have a bug here..."
     OperatingSystem isOSXlike ifTrue:[^ false].
     ^ true