leteselection;
        <span style="color:navy"><b>PROCEDURE</b></span> clearundo;
        <span style="color:navy"><b>PROCEDURE</b></span> undo; <span style="color:teal"><b>VIRTUAL</b></span>;
        <span style="color:navy"><b>PROCEDURE</b></span> selectall;
        <span style="color:navy"><b>PROCEDURE</b></span> clearselection;
        <span style="color:navy"><b>PROPERTY</b></span> forcecaret: boolean <span style="color:navy"><b>READ</b></span> getforcecaret <span style="color:navy"><b>WRITE</b></span