Dont use must non-normatively

source

@@ -68798,10 +68798,9 @@ try {
     <dd>
      <p>Returns the current color space used for interpolation.</p>
 
-     <p>Can be set, to change the <span
-     data-x="ColorInterpolationMethod">colorInterpolationMethod</span> color space.</p>
-
-     <p>The color space must be a string. Invalid values are ignored.</p>
+     <p>Can be set, to change the space used for color interpolation. Possible values are enumerated
+     in the <span data-x="ColorInterpolationMethod">ColorInterpolationMethod</span> enum. Other
+     values are ignored.</p>
     </dd>
 
     <dt><code data-x=""><var>gradient</var>.<span data-x="HueInterpolationMethod">hueInterpolationMethod</span> [ = <var>value</var> ]</code></dt>
@@ -68812,7 +68811,8 @@ try {
      <p>Can be set, to change the <span
      data-x="HueInterpolationMethod">hueInterpolationMethod</span>.</p>
 
-     <p>The method must be a string. Invalid values are ignored.</p>
+     <p>Possible hue interpolation method values are "shorter", "longer", "increasing", or
+     "decreasing". Other values are ignored.</p>
     </dd>
 
     <dt><code data-x=""><var>gradient</var>.<span data-x="canvas-gradient-premultipliedAlpha">premultipliedAlpha</span> [ = <var>value</var> ]</code></dt>