diff --git a/doc/RFC_XR_Fragments.html b/doc/RFC_XR_Fragments.html
index 0d743a3..ac26fdf 100644
--- a/doc/RFC_XR_Fragments.html
+++ b/doc/RFC_XR_Fragments.html
@@ -569,7 +569,7 @@ That way, if the link gets shared, the XR Fragments implementation at <code>http
 <p>Example URI&rsquo;s:</p>
 
 <ul>
-<li><code>https://shaders.org/plasma.glsl#t=0&amp;u.col1=1,0,0&amp;u.col2=0,1,0</code> (red-green shader plasma starts playing from time-offset 0)</li>
+<li><code>https://shaders.org/plasma.glsl#t=0&amp;u:col1=1,0,0&amp;u:col2=0,1,0</code> (red-green shader plasma starts playing from time-offset 0)</li>
 <li><code>https://images.org/credits.jpg#t=0&amp;sxy=l:0,0.1</code> (infinite vertical texturescrolling)</li>
 <li><code>https://video.org/organogram.mp4#t=0&amp;sxy:0.1,0.1&amp;xywh=500,500,480,640</code> (animated zoom towards region in video)</li>
 </ul>
diff --git a/doc/RFC_XR_Fragments.md b/doc/RFC_XR_Fragments.md
index 1d8b438..faba80f 100644
--- a/doc/RFC_XR_Fragments.md
+++ b/doc/RFC_XR_Fragments.md
@@ -275,7 +275,7 @@ These are automatic fragment-to-metadata mappings, which only trigger if the 3D
 | temporal W3C media fragment * | t=[l:]x,y              | l:0,1           | play [as loop] between `x` and `y`  |
 | temporal W3C media fragment * | s=x[,y]                | 1               | set playback speed of audio/video/3D anim |
 | temporal W3C media fragment * | sxy=[l:]x,y            | 0.1,0.2         | xy scrollspeed of new xywh viewport/uvcoordinates (default `1,1` is instant): allows lerping to new `xywh` values [or infinite texturescrolling] |
-| temporal W3C media fragment * | u:<uniform>=<string|float|vec2|vec3|vec4> | u.color=1,0,0   | set shader uniform value |
+| temporal W3C media fragment * | u:<uniform>=<string|float|vec2|vec3|vec4> | u:color=1,0,0   | set shader uniform value |
 
 > \* = this is extending the [W3C media fragments](https://www.w3.org/TR/media-frags/#mf-advanced) with finer playback/viewport-control:
 
@@ -289,7 +289,7 @@ These are automatic fragment-to-metadata mappings, which only trigger if the 3D
 
 Example URI's:
 
-* `https://shaders.org/plasma.glsl#t=0&u.col1=1,0,0&u.col2=0,1,0` (red-green shader plasma starts playing from time-offset 0)
+* `https://shaders.org/plasma.glsl#t=0&u:col1=1,0,0&u:col2=0,1,0` (red-green shader plasma starts playing from time-offset 0)
 * `https://images.org/credits.jpg#t=0&sxy=l:0,0.1` (infinite vertical texturescrolling)
 * `https://video.org/organogram.mp4#t=0&sxy:0.1,0.1&xywh=500,500,480,640` (animated zoom towards region in video)
 
diff --git a/doc/RFC_XR_Fragments.txt b/doc/RFC_XR_Fragments.txt
index 2b8cb0c..eef08e0 100644
--- a/doc/RFC_XR_Fragments.txt
+++ b/doc/RFC_XR_Fragments.txt
@@ -593,7 +593,7 @@ Internet-Draft                XR Fragments                 February 2024
 
    Example URI's:
 
-   *  https://shaders.org/plasma.glsl#t=0&u.col1=1,0,0&u.col2=0,1,0
+   *  https://shaders.org/plasma.glsl#t=0&u:col1=1,0,0&u:col2=0,1,0
       (red-green shader plasma starts playing from time-offset 0)
    *  https://images.org/credits.jpg#t=0&sxy=l:0,0.1 (infinite vertical
       texturescrolling)
diff --git a/doc/RFC_XR_Fragments.xml b/doc/RFC_XR_Fragments.xml
index dd4ec2e..dfdbdb7 100644
--- a/doc/RFC_XR_Fragments.xml
+++ b/doc/RFC_XR_Fragments.xml
@@ -466,7 +466,7 @@ That way, if the link gets shared, the XR Fragments implementation at <tt>https:
 </table><t>Example URI's:</t>
 
 <ul spacing="compact">
-<li><tt>https://shaders.org/plasma.glsl#t=0&amp;u.col1=1,0,0&amp;u.col2=0,1,0</tt> (red-green shader plasma starts playing from time-offset 0)</li>
+<li><tt>https://shaders.org/plasma.glsl#t=0&amp;u:col1=1,0,0&amp;u:col2=0,1,0</tt> (red-green shader plasma starts playing from time-offset 0)</li>
 <li><tt>https://images.org/credits.jpg#t=0&amp;sxy=l:0,0.1</tt> (infinite vertical texturescrolling)</li>
 <li><tt>https://video.org/organogram.mp4#t=0&amp;sxy:0.1,0.1&amp;xywh=500,500,480,640</tt> (animated zoom towards region in video)</li>
 </ul>