diff --git a/toroid.html b/toroid.html
index 1ce7ac0..eecc3f4 100644
--- a/toroid.html
+++ b/toroid.html
@@ -74,7 +74,7 @@
Inputs via the slider widgets:
- AWG : Select the wire gauge. Sliding L-R changes AWG from 40-0. (Defaults to 20 AWG)
- - Nd : Winding density at the toroid inner-diameter. Controls how many single-layer turns can be achieved around the core.
+
- N : Winding density at the toroid inner-diameter. Controls how many single-layer turns can be achieved around the core.
Maximum (100%, slider to hard-right) is reached when the turns are adjacent at the toroid's inner radius. (Defaults to 15%)
- Vrms : The RMS voltage applied to the inductor (Volts). Determines the flux-density (B) and field-intensity (H) within the ferrite toroid. (Defaults to 10Vrms)
- f : Shifts the frequency of interest of the chart display from left-to-right. Left towards kHz, right towards GHz.