Bug 69424 TVT3.0: Multiple Mnemonics in Tasks -> Filters
From the main Workbench view, click the Task menu (drop down arrow) and select Filters. There are duplicated mnemonics for (D). See the attached screenshot.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/DialogMarkerFilter.java
* <code>false</code>.
     */
    boolean isDirty() {
        return dirty;
    }
    /**
     * Marks the dialog as dirty.
     */
    void markDirty() {
        dirty = true;
    }
    public void setFilter(MarkerFilter newFilter) {
        filter = newFilter;
        updateUIFromFilter();
    }
    /**
     * @return the MarkerFilter associated with the dialog.
     */
    public MarkerFilter getFilter() {
        return filter;
    }
    /**
     * @return <code>true</code> if the filter's enablement button is checked 
     * otherwise <code>false</code>.
     */
    protected boolean isFilterEnabled() {
        return (filterEnabledButton == null)
                || filterEnabledButton.getSelection();
    }
}