Minor change

docs/Basics/Vanilla/Vanilla.mdx

@@ -137,7 +137,7 @@ Let's see how to implement it:
   <summary>About alpha compositing</summary>
 
 I've seen very experienced graphics engineers unfamiliar with alpha compositing.
-I would recommend two articles [1](https://ciechanow.ski/alpha-compositing/) and [2](https://wiki.edunitas.com/IT/en/114-10/alpha-channels_400_eduNitas.html).
+And I would recommend two articles [1](https://ciechanow.ski/alpha-compositing/) and [2](https://wiki.edunitas.com/IT/en/114-10/alpha-channels_400_eduNitas.html).
 The topic is so important for 2D rendering that I will write a dedicated article to explain when introducing the airbrush.
 
 </details>

docs/Proportional-Interval-Stamp/Proportional-Interval-Stamp.mdx

@@ -29,7 +29,7 @@ Excerpts and links may be used, provided that full and clear credit is given to
 
 :::
 
-## Stamp patterns
+## Interval patterns
 
 ### Fixed interval
 In the [Stamp](../Basics/Stamp) section, we learned stamp brush and methods to render it.
@@ -51,9 +51,6 @@ You may notice the resulting stroke has denser dots and appearance.
 This is because the interval between stamps in the first stroke is equal to the radius of each dot.
 In contrast, the interval in the resulting stroke is smaller than its radius.
 So, the result stroke's dots are aligned more densely than those in the first stroke.
-
-As we change the stroke radius, the interval between the dots has not been adjusted accordingly.
-This leads to the change in appearance.
 This is unintuitive since artists expect the concept of "brush" controls the stroke appearance.
 Copying and pasting a brush imply the source and target stroke have the same appearance.