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diff --git a/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/slice/ValueRange.java b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/slice/ValueRange.java
new file mode 100644
index 000000000..5e5d1e71f
--- /dev/null
+++ b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/slice/ValueRange.java
@@ -0,0 +1,142 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.datastructures.slice;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public class ValueRange {
+
+    public static final ValueRange NO_RANGE = new ValueRange(0, Integer.MAX_VALUE);
+    public static final ValueRange EMPTY = new ValueRange(0, 0);
+    public static final ValueRange ONE   = new ValueRange(0, 1);
+    public static final ValueRange TWO   = new ValueRange(0, 2);
+
+    private final int start;
+    private final int size;
+
+    public static ValueRange make(int size) {
+        if (size == 0)
+            return EMPTY;
+        else if (size == 1)
+            return ONE;
+        else if (size == 2)
+            return TWO;
+        return new ValueRange(size);
+    }
+
+    public static ValueRange make(int start, int size) {
+        if (start == 0) {
+            if (size == 0)
+                return EMPTY;
+            else if (size == 1)
+                return ONE;
+            else if (size == 2)
+                return TWO;
+        }
+        return new ValueRange(start, size);
+    }
+
+    private ValueRange(int size) {
+        this(0, size);
+    }
+
+    private ValueRange(int start, int size) {
+        if (start < 0)
+            throw new IllegalArgumentException("negative range start: " + start);
+        if (size < 0)
+            throw new IllegalArgumentException("negative range size: " + size);
+        this.start = start;
+        this.size = size;
+    }
+
+    public boolean isEmpty() {
+        return size == 0;
+    }
+
+    public boolean isSingle() {
+        return size == 1;
+    }
+
+    public int start() {
+        return start;
+    }
+
+    public int end() {
+        return start + size;
+    }
+
+    public int size() {
+        return size;
+    }
+
+    @Override
+    public String toString() {
+        if (isEmpty())
+            return "[]";
+        if (isSingle())
+            return "[" + start + "]";
+        return "[" + start + "-" + (start + size - 1) + "]";
+    }
+
+    public String toString(int offset) {
+        if (isEmpty())
+            return "[]";
+        if (isSingle())
+            return "[" + (start+offset) + "]";
+        return "[" + (start+offset) + "-" + (start + size - 1 + offset) + "]";
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + size;
+        result = prime * result + start;
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        ValueRange other = (ValueRange) obj;
+        return size == other.size && start == other.start;
+    }
+
+//    public ChildReference toChildReference() {
+//        if (isEmpty())
+//            throw new UnsupportedOperationException("cannot create a value reference for an empty range");
+//        if (isSingle())
+//            return new IndexReference(start);
+//        //throw new RangeReference(start, start+size-1);
+//        throw new UnsupportedOperationException("cannot create a value reference for a range with cardinality > 1");
+//    }
+
+    /**
+     * @return a Simantics Databoard child reference string describing this range.
+     */
+    public String toChildReferenceString() {
+        if (isEmpty())
+            throw new UnsupportedOperationException("cannot create a value reference for an empty range");
+        StringBuilder sb = new StringBuilder();
+        if (isSingle())
+            return sb.append("i-").append(start).toString();
+        // TODO: proposal: http://dev.simantics.org/index.php/Talk:Databoard_Specification
+        return sb.append("r-").append(start).append('-').append(start+size-1).toString();
+    }
+
+}