E</b></span>;
        <span style="color:navy"><b>PROCEDURE</b></span> togglegridvalue (const index: integer); <span style="color:teal"><b>OVERRIDE</b></span>;
        
        <span style="color:navy"><b>PROPERTY</b></span> value: boolean <span style="color:navy"><b>READ</b></span> getvalue <span style="color:navy"><b>WRITE</b></span> setvalue <span style="color:navy"><b>DEFAULT</b></span> false;
        <span style="color:navy"><b>PROPERTY</b></span> valuedefault: boolean <span style="color:navy"><b>READ<