diff --git a/AERN-RnToRm-Plot.cabal b/AERN-RnToRm-Plot.cabal
--- a/AERN-RnToRm-Plot.cabal
+++ b/AERN-RnToRm-Plot.cabal
@@ -1,5 +1,5 @@
 Name:           AERN-RnToRm-Plot
-Version:        0.1.0
+Version:        0.1.1
 Cabal-Version:  >= 1.2
 Build-Type:     Simple
 License:        BSD3
@@ -28,19 +28,18 @@
   if flag(containers-in-base)
     Build-Depends:
       base < 3, binary >= 0.4, directory, filepath, old-time, stm,
-      AERN-Real >= 0.9.7.1, AERN-RnToRm >= 0.4.1, 
+      AERN-Real >= 0.9.8, AERN-RnToRm >= 0.4.2,
       OpenGL >= 2.2.1.1, GLUT >= 2.1.1.1,
-      gtk >= 0.9.12.1, gtkglext >= 0.9.12.1, glib >= 0.9.12.1, glade >= 0.9.12.1
+      gtk >= 0.9.13, gtkglext >= 0.9.13, glib >= 0.9.13, glade >= 0.9.13
   else
     Build-Depends:
       base >= 3, containers, binary >= 0.4, directory, filepath, old-time, stm, 
       AERN-Real >= 0.9.7.1, AERN-RnToRm >= 0.4.1, 
       OpenGL >= 2.2.1.1, GLUT >= 2.1.1.1,
-      gtk >= 0.9.12.1, gtkglext >= 0.9.12.1, glib >= 0.9.12.1, glade >= 0.9.12.1
+      gtk >= 0.9.13, gtkglext >= 0.9.13, glib >= 0.9.13, glade >= 0.9.13
   Exposed-modules:
     Data.Number.ER.RnToRm.Plot.FnView,
     Data.Number.ER.RnToRm.Plot.GLDrawable,
-    Data.Number.ER.RnToRm.Plot.Params,
-    Data.Number.ER.MiscSTM
+    Data.Number.ER.RnToRm.Plot.Params
     
   
diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,2 +1,4 @@
+0.1.1: 1 December 2008
+    * moved MiscSTM from here to AERN-Real so that it can be used also in AERN-Net
 0.1.0: 1 October 2008
     * initial release of AERN-RnToRm-Plot
diff --git a/src/Data/Number/ER/MiscSTM.hs b/src/Data/Number/ER/MiscSTM.hs
deleted file mode 100644
--- a/src/Data/Number/ER/MiscSTM.hs
+++ /dev/null
@@ -1,31 +0,0 @@
-{-|
-    Utilities related to concurrency.
--}
-module Data.Number.ER.MiscSTM where
-
-import Control.Concurrent as Concurrent
-import Control.Concurrent.STM as STM
-
-modifyTVar tv update =
-    do
-    value <- readTVar tv
-    writeTVar tv $ update value
-
-modifyTVarGetOldVal tv update =
-    do
-    value <- readTVar tv
-    writeTVar tv $ update value
-    return value
-
-modifyTVarHasChanged tv update =
-    do
-    value <- readTVar tv
-    let newValue = update value
-    if value == newValue
-        then return False
-        else 
-            do
-            writeTVar tv $ update value
-            return True
-    
-    
diff --git a/src/Data/Number/ER/RnToRm/Plot/GLDrawable.hs b/src/Data/Number/ER/RnToRm/Plot/GLDrawable.hs
--- a/src/Data/Number/ER/RnToRm/Plot/GLDrawable.hs
+++ b/src/Data/Number/ER/RnToRm/Plot/GLDrawable.hs
@@ -143,7 +143,7 @@
      DomainIntBox box varid domra,
      DomainBoxMappable dtrbox box varid (DomTransl domra) domra, 
      DomainBoxMappable box dtrbox varid domra (DomTransl domra), 
-     Eq dtrbox) =>
+     Eq dtrbox, Ord dtrbox) =>
     ERFnGLDrawable box varid domra ranra (ERFnDomTranslApprox dtrbox varid ufa domra)
     
 instance