diff --git a/com.sap.adt.abapcleaner.gui/plugin.xml b/com.sap.adt.abapcleaner.gui/plugin.xml
index 5cd1e4ac..29c92c6a 100644
--- a/com.sap.adt.abapcleaner.gui/plugin.xml
+++ b/com.sap.adt.abapcleaner.gui/plugin.xml
@@ -15,6 +15,12 @@
             id="com.sap.adt.abapcleaner.cleanup.interactive"
             name="Clean Up With Interactive ABAP Cleaner...">
       </command>
+      <command
+            categoryId="com.sap.adt.tools.abapsource.ui.source.category"
+            description="preview the cleanup result on the ABAP cleaner UI in read-only mode, without locking or changing the code object"
+            id="com.sap.adt.abapcleaner.cleanup.readonly"
+            name="Preview as Read-Only With ABAP Cleaner...">
+      </command>
    </extension>
    <extension
          point="org.eclipse.ui.menus">
@@ -55,6 +61,23 @@
                </with>
             </visibleWhen>
          </command>
+         <command
+               commandId="com.sap.adt.abapcleaner.cleanup.readonly"
+               icon="resources/CommandIcon.png"
+               style="push">
+            <visibleWhen
+                  checkEnabled="false">
+               <with
+                     variable="activePart">
+                  <test
+                        args="com.sap.adt.abapcleaner.cleanup.readonly"
+                        forcePluginActivation="true"
+                        property="com.sap.adt.tools.abapsource.ui.editormenu.shouldShowContextMenu"
+                        value="true">
+                  </test>
+               </with>
+            </visibleWhen>
+         </command>
       </menuContribution>
    </extension>
    <extension
@@ -91,6 +114,22 @@
             </with>
          </activeWhen>
       </handler>
+      <handler
+            class="com.sap.adt.abapcleaner.gui.eclipse.AbapCleanerHandlerReadOnly"
+            commandId="com.sap.adt.abapcleaner.cleanup.readonly">
+         <activeWhen>
+            <with
+                  variable="activeContexts">
+               <iterate
+                     ifEmpty="false"
+                     operator="or">
+                  <equals
+                        value="com.sap.adt.tools.abapsource.ui.abapCode">
+                  </equals>
+               </iterate>
+            </with>
+         </activeWhen>
+      </handler>
    </extension>
    <extension
          point="org.eclipse.ui.bindings">
@@ -106,6 +145,12 @@
             schemeId="org.eclipse.ui.defaultAcceleratorConfiguration"
             sequence="M1+M2+4">
       </key>
+      <key
+            commandId="com.sap.adt.abapcleaner.cleanup.readonly"
+            contextId="com.sap.adt.tools.abapsource.ui.abapCode"
+            schemeId="org.eclipse.ui.defaultAcceleratorConfiguration"
+            sequence="M1+M2+5">
+      </key>
    </extension>
    <extension
          id="com.sap.adt.abapcleaner.standalone.app"
diff --git a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/FrmMain.java b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/FrmMain.java
index 2a925cf1..34df8e4a 100644
--- a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/FrmMain.java
+++ b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/FrmMain.java
@@ -138,7 +138,7 @@ public static void main(String[] args) {
 
 			if (commandLineArgs == null) {
 				// start the interactive (stand-alone) UI 
-				cleanInteractively(null, ABAP.NEWEST_RELEASE, null, false, null, null);
+				cleanInteractively(null, ABAP.NEWEST_RELEASE, null, false, null, null, false);
 
 			} else {
 				if (commandLineArgs.hasErrors()) {
@@ -303,7 +303,7 @@ public static CleanupResult cleanAutomatically(String sourceCode, String abapRel
 		}
 	}
 	
-	public static CleanupResult cleanInteractively(String sourceCode, String abapRelease, CleanupRange cleanupRange, boolean isPlugin, String sourcePageTitle, CodeDisplayColors codeDisplayColors) {
+	public static CleanupResult cleanInteractively(String sourceCode, String abapRelease, CleanupRange cleanupRange, boolean isPlugin, String sourcePageTitle, CodeDisplayColors codeDisplayColors, boolean readOnly) {
 		initialize();
 		
 		Persistency persistency = Persistency.get();
@@ -313,7 +313,7 @@ public static CleanupResult cleanInteractively(String sourceCode, String abapRel
 
 		FrmMain window = new FrmMain();
 		window.codeDisplayColors = (codeDisplayColors != null) ? codeDisplayColors : CodeDisplayColors.createDefault();
-		window.open(isPlugin, sourcePageTitle, sourceCode, abapRelease, cleanupRange);
+		window.open(isPlugin, sourcePageTitle, sourceCode, abapRelease, cleanupRange, readOnly);
 
 		if (window.resultCode != null)
 			return window.resultCode.toCleanupResult(); 
@@ -340,7 +340,7 @@ public FrmMain() {
 	/**
 	 * @wbp.parser.entryPoint
 	 */
-	public void open(boolean isPlugin, String sourcePageTitle, String sourceCode, String abapRelease, CleanupRange cleanupRange) {
+	public void open(boolean isPlugin, String sourcePageTitle, String sourceCode, String abapRelease, CleanupRange cleanupRange, boolean readOnly) {
 		this.isPlugin = isPlugin;
 		
 		Display display = Display.getDefault();
@@ -370,6 +370,14 @@ public void open(boolean isPlugin, String sourcePageTitle, String sourceCode, St
 			mmuCodeClearDisplay.dispose();
 			mmuCodeSeparator.dispose();
 			mmuCodeExit.dispose();
+			
+			if (readOnly) {
+				mmuCodeApplyAndClose.dispose();
+				mmuCodeCancel.setText(getMenuItemTextWithAccelerator("&Close Read-Only Preview", SWT.ESC));
+				btnApplyAndClose.dispose();
+				btnCancel.setText("Close Read-Only Preview");
+				btnCancel.requestLayout();
+			}
 		} else {
 			mmuCodeCancel.dispose();
 			mmuCodeApplyAndClose.dispose();
@@ -1418,22 +1426,36 @@ private boolean refreshCode(String newSourceName, String newSourcePath, String n
 		}
 		
 		// show result
-		shell.setText(Program.PRODUCT_NAME + " - " + sourceName);
+		String abapReleaseInfo = getReleaseInfo(newAbapRelease);
+		shell.setText(Program.PRODUCT_NAME + " - " + sourceName + abapReleaseInfo);
 		codeDisplay.setInfo(sourceName, sourcePath, sourceCode, abapRelease, curProfile.getSingleActiveRule());
 		codeDisplay.refreshCode(result.getResultingCode(), result.getResultingDiffDoc(), topLineIndex, curLineIndex, selectionStartLine);
-		if (Program.showDevFeatures())
-			shell.setText(Program.PRODUCT_NAME + " - " + sourceName + " - " + result.getCalculationTimeInfo());
-
+		if (Program.showDevFeatures()) {
+			shell.setText(Program.PRODUCT_NAME + " - " + sourceName + abapReleaseInfo + " - " + result.getCalculationTimeInfo());
+		}
 		// remember the resulting Code instance; the CleanupResult will only be created from it when the window is closed 
 		resultCode = result.getResultingCode(); 
 
 		if (result.getLogSummary() != null) { // even with result.getSuccess() == true, there may be warnings in the log
-			if (showMessages) // TODO: otherwise, display it on a Label? (for 'Watch and Modify Clipboard' function)
+			if (showMessages) { // TODO: otherwise, display it on a Label? (for 'Watch and Modify Clipboard' function)
 				Message.show(result.getLogSummary());
+			}
 		}
 		return true;
 	}
 
+	private String getReleaseInfo(String abapRelease) {
+		if (StringUtil.isNullOrEmpty(abapRelease)) 
+			return "";
+		
+		// convert "757" into "7.57"
+		String abapReleaseDisplay = abapRelease;
+		if (ABAP.consistsOfDigitsOnly(abapRelease) && abapRelease.length() == 3) 
+			abapReleaseDisplay = abapRelease.substring(0, 1) + "." + abapRelease.substring(1);	
+
+		return " (ABAP " + abapReleaseDisplay + ")";
+	}
+	
 	private Task runJobWithProgressUiIfNeeded(BackgroundJob job) {
 		return runJobWithProgressUiIfNeeded(job, Job.CODE_LENGTH_TO_SHOW_PROGRESS_FORM);
 	}
diff --git a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerAutomatic.java b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerAutomatic.java
index 28594da4..abfdd66b 100644
--- a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerAutomatic.java
+++ b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerAutomatic.java
@@ -2,6 +2,6 @@
 
 public class AbapCleanerHandlerAutomatic extends AbapCleanerHandlerBase {
 	public AbapCleanerHandlerAutomatic() {
-		super(false);
+		super(false, false);
 	}
 }
diff --git a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerBase.java b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerBase.java
index d4670e4a..ebb69321 100644
--- a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerBase.java
+++ b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerBase.java
@@ -48,9 +48,11 @@
 public abstract class AbapCleanerHandlerBase extends AbstractAdtEditorHandler {
 
 	private boolean interactive;
+	private boolean readOnly;
 
-	protected AbapCleanerHandlerBase(boolean interactive) {
+	protected AbapCleanerHandlerBase(boolean interactive, boolean readOnly) {
 		this.interactive = interactive;
+		this.readOnly = readOnly;
 	}
 
 	@Override
@@ -68,7 +70,7 @@ public Object execute(ExecutionEvent event) throws ExecutionException {
 			// get the ADT source page and file and check whether editing is allowed
 			IAbapSourcePage adtSourcePage = getAdtSourcePage(HandlerUtil.getActiveEditor(event));
 			IFile file = ((IFileEditorInput) adtSourcePage.getEditorInput()).getFile();
-			if (!adtSourcePage.validateEdit(file)) {
+			if (!readOnly && !adtSourcePage.validateEdit(file)) {
 				return null;
 			}
 			
@@ -93,7 +95,7 @@ public Object execute(ExecutionEvent event) throws ExecutionException {
 			if (interactive) {
 	         // get ADT color settings to make code in the ABAP cleaner UI appear similar to code in ADT
 				CodeDisplayColors codeDisplayColors = createCodeDisplayColors(); 
-				result = FrmMain.cleanInteractively(oldSource, abapRelease, cleanupRange, true, adtSourcePage.getTitle(), codeDisplayColors);
+				result = FrmMain.cleanInteractively(oldSource, abapRelease, cleanupRange, true, adtSourcePage.getTitle(), codeDisplayColors, readOnly);
 			} else {
 				result = FrmMain.cleanAutomatically(oldSource, abapRelease, cleanupRange, null, false);
 			}
@@ -101,7 +103,7 @@ public Object execute(ExecutionEvent event) throws ExecutionException {
 			if (result == null) 
 				return null;
 
-			if (result.hasCleanedCode())
+			if (result.hasCleanedCode() && !readOnly)
 				replaceTextInDocument(document, adtSourcePage, oldSource, result.cleanedCode, new CleanupResultWrapper(result));
 			else if (result.hasErrorMessage()) 
 				MessageDialog.openError(adtSourcePage.getSite().getShell(), Program.PRODUCT_NAME, result.errorMessage);
diff --git a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerInteractive.java b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerInteractive.java
index 3f013533..1d0b2302 100644
--- a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerInteractive.java
+++ b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerInteractive.java
@@ -2,6 +2,6 @@
 
 public class AbapCleanerHandlerInteractive extends AbapCleanerHandlerBase {
 	public AbapCleanerHandlerInteractive() {
-		super(true);
+		super(true, false);
 	}
 }
diff --git a/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerReadOnly.java b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerReadOnly.java
new file mode 100644
index 00000000..d65089cd
--- /dev/null
+++ b/com.sap.adt.abapcleaner.gui/src/com/sap/adt/abapcleaner/gui/eclipse/AbapCleanerHandlerReadOnly.java
@@ -0,0 +1,7 @@
+package com.sap.adt.abapcleaner.gui.eclipse;
+
+public class AbapCleanerHandlerReadOnly extends AbapCleanerHandlerBase {
+	public AbapCleanerHandlerReadOnly() {
+		super(true, true);
+	}
+}