diff --git a/transformer.html b/transformer.html
index 93bcb28..d83d5f9 100644
--- a/transformer.html
+++ b/transformer.html
@@ -97,6 +97,7 @@
             <ul> 
                 <li>Size : Selects the size of the toroid. FT240 is 2.4" in diameter. FT80 is 0.8", etc...</li>
                 <li>Material : Manufacturers material mix code. Select this first. Initial permeability [&#956;i] is displayed in square brackets. (Pick lower &#956;i for higher frequency applications.) </li>
+                <li>Leakage and Parasitic Model : Select the model used to estimate the primary and secondary leakage inductance and parasitic capacitance.</li>
             </ul>
             <b><u>Inputs via the slider widgets:</u></b>
             <ul>