Update the Notes section

toroid.html

@@ -89,6 +89,7 @@
             Calculated parameters are displayed against frequency (log scale). Each parameter may be displayed or hidden
             by tapping on the legend key. Tapping on a data point will display the parameters for a single frequency.
             <ul>
+                <li>L(&#956;H) : Inductance in microhenries. </li>
                 <li>|Z|(&#937;) : Impedance magnitude in Ohms. </li>
                 <li> R(&#937;) : Resistance due to core losses in Ohms. </li>
                 <li> X(&#937;) : Reactance in Ohms. </li>
@@ -105,7 +106,7 @@
             Scaled representation of the toroid and the windings. Wire gauge and toroid dimensions are provided.<br>
             On the left of the display are the following:
             <ul>
-                <li>L : Inductance in microhenries.</li>
+                <li>L&#7522; : Initial inductance in microhenries. This is based on the initial permeability figure found in data sheets. For accuracy, use the frequency-dependent inductance displayed in the chart.</li>
                 <li>Vrms : Excitation RMS voltage selected.</li>
                 <li>Rdc : Wire resistance in ohms.</li>
                 <li>Ceff : Experimental effective-capacitance calculation to determine SRF. (Under development so greyed-out.)</li>