diff --git a/magloop.html b/magloop.html
index e92624b..691fc94 100644
--- a/magloop.html
+++ b/magloop.html
@@ -109,7 +109,8 @@
                 <li>Tuning Cap (pF): The capacitance required to bring the loop into resonance at the given frequency. Value in picofarads.</li>
                 <li>Vcap (kV): The predicted voltage across the capacitance given the desired transmit power.</li>
                 <li>BW (kHz): The predicted 3dB bandwidth of the magloop antenna. </li>
-                <li>Efficiency (%): The percentage of input energy that is actually radiated and not lost as heat.</li>
+                <li>Efficiency (%): The percentage of input energy that is actually radiated and not lost as heat. This efficiency figure is based on conductor losses of the main loop only. 
+                Missing, are losses due to the capacitor, feedline and the near-field environment. These losses can be added via the Re slider.</li>
                 <li>R-radiation (&#937): The calculated radiation resistance of the loop in ohms.</li>
                 <li>R-loop (&#937): The calculated resistance of the loop in ohms, due to the combination of material conductance, conductor length, skin-effect and proximity effects.</li>
                 <li>Reactance (j&#937): The inductive reactance of the loop in ohms.</li>