Describe AI Denoise in the manual as it now is

On for every raw, at the top of the Adjust panel, kept once computed,
and eased off with Strength rather than Keep grain. The timing line is
left as it was; the new model's measured figure replaces it when that
branch lands. The animation still shows the Keep grain slider and
wants recording again.

docs/manual/README.md

@@ -207,18 +207,20 @@ the sensor recorded.
 
 ### AI denoise
 
-For a photograph taken in poor light at a high ISO. `AI Denoise`, in the
+How every raw is developed. `AI Denoise`, at the top of the Adjust panel,
-Detail group, replaces how the camera's raw data is turned into colour: a
+replaces how the camera's raw data is turned into colour: a network trained
-network trained on this library's own photographs removes the noise and
+on this library's own photographs removes the noise and the blotches of
-the blotches of colour that come with it, while keeping the fine detail.
+colour that come with it, while keeping the fine detail. It is on for every
-Look at it at 1:1, where noise lives.
+raw unless you switch it off with `Apply`. Look at it at 1:1, where noise
+lives.
 
-Switch it on with `Apply`. The photograph keeps showing as it was while
+The photograph shows the camera's ordinary conversion while the network
-the network works, with its progress in the bar at the top, and changes
+works, with its progress in the bar at the top, and changes when it is
-when it is done — a few seconds on a computer with a graphics card, about
+done — a few seconds on a computer with a graphics card, about
-fifteen on its processor alone, longer on the tablet. `Keep grain` puts
+fifteen on its processor alone, longer on the tablet. The result is kept,
-back some of what was removed, as grain without colour, for a picture that
+so a photograph opened again, or exported, does not wait a second time.
-does not look too smooth.
+`Strength` eases it off: below 100 % it puts back some of what was removed,
+as grain without colour, for a picture that does not look too smooth.
 
 ![An ISO 8000 night frame at 1:1, AI Denoise switched on, then some grain kept](media/develop-denoise.gif)
 

docs/manual/index.html

@@ -289,17 +289,19 @@ drawn as hard-edged blocks rather than smoothed, so what you see is what
 the sensor recorded.</p>
 <figure><img loading="lazy" src="media/develop-zoom.gif" alt="Zooming to 1:1 with a double-click, panning, then further in with the wheel"><figcaption>Zooming to 1:1 with a double-click, panning, then further in with the wheel</figcaption></figure>
 <h3 id="ai-denoise">AI denoise</h3>
-<p>For a photograph taken in poor light at a high ISO. <code>AI Denoise</code>, in the
+<p>How every raw is developed. <code>AI Denoise</code>, at the top of the Adjust panel,
-Detail group, replaces how the camera's raw data is turned into colour: a
+replaces how the camera's raw data is turned into colour: a network trained
-network trained on this library's own photographs removes the noise and
+on this library's own photographs removes the noise and the blotches of
-the blotches of colour that come with it, while keeping the fine detail.
+colour that come with it, while keeping the fine detail. It is on for every
-Look at it at 1:1, where noise lives.</p>
+raw unless you switch it off with <code>Apply</code>. Look at it at 1:1, where noise
-<p>Switch it on with <code>Apply</code>. The photograph keeps showing as it was while
+lives.</p>
-the network works, with its progress in the bar at the top, and changes
+<p>The photograph shows the camera's ordinary conversion while the network
-when it is done — a few seconds on a computer with a graphics card, about
+works, with its progress in the bar at the top, and changes when it is
-fifteen on its processor alone, longer on the tablet. <code>Keep grain</code> puts
+done — a few seconds on a computer with a graphics card, about
-back some of what was removed, as grain without colour, for a picture that
+fifteen on its processor alone, longer on the tablet. The result is kept,
-does not look too smooth.</p>
+so a photograph opened again, or exported, does not wait a second time.
+<code>Strength</code> eases it off: below 100 % it puts back some of what was removed,
+as grain without colour, for a picture that does not look too smooth.</p>
 <figure><img loading="lazy" src="media/develop-denoise.gif" alt="An ISO 8000 night frame at 1:1, AI Denoise switched on, then some grain kept"><figcaption>An ISO 8000 night frame at 1:1, AI Denoise switched on, then some grain kept</figcaption></figure>
 <table><thead><tr><th>Before</th><th>After</th></tr></thead><tbody>
 <tr><td><img src="media/develop-denoise-before.png" alt="The railing and the lamp at ISO 8000, as the camera recorded them" /></td><td><img src="media/develop-denoise-after.png" alt="The same, with AI Denoise" /></td></tr>