<h3> Please note: </h3> <br>You are using a rather old version of an internet browser program which is not able to display so-called "frames". <h3>To still see the Logic Notation Guide page you just chose, please click <a href="../LNG_Prices.htm">here</a>. <br> However, some of the links on that page might not work work since they refer to other pages that use frames again. </h3>