diff --git a/doc/xschem_man/graphs.html b/doc/xschem_man/graphs.html
index 6e141f08..c2641f32 100644
--- a/doc/xschem_man/graphs.html
+++ b/doc/xschem_man/graphs.html
@@ -215,6 +215,7 @@ p{padding: 15px  30px 10px;}
   <li><kbd>asin()</kbd> Inverse trig. sin function</li>
   <li><kbd>acos()</kbd> Inverse trig. cos function</li>
   <li><kbd>atan()</kbd> Inverse trig. tan function</li>
+  <li><kbd>cph()</kbd> Continuous phase. Instead of [-180, +180] discontinuities make phase continuous</li>
   <li><kbd>sqrt()</kbd> Square root</li>
   <li><kbd>sgn()</kbd> Sign</li>
   <li><kbd>abs()</kbd> Absolute value</li>