For several times starting from this article, I would like to refer to various formats. In any format, a rendering command of Bézier curves is common. The specific writing method is summarized and explained separately from the formats.

SVG is a familiar vector image format. It is widely used in logos, icons, etc. in web pages.
In font engineering, SVG may be utilized to check outlines.
Although SVG employs various elements in its figures, the path element will be introduced in this series. The path command for Bézier curves described in the d attribute in particular is central in this explanation.

When the following is described and saved in “.svg,” it can be displayed as is in the browser.

<svg viewBox "0 0 100 100" xmlns="<http://www.w3.org/2000/svg>">
  <path d="{Command of Bézier curve here...}" />
</svg> 

If you would like more detailed specifications, please refer to the document below:
https://developer.mozilla.org/ja/docs/Web/SVG/Attribute/d

(LN)