feGaussianBlur needs guidance about setting height and width

MDN URL

https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feGaussianBlur

What specific section or headline is this issue about?

"height" and "width" elements are important

What information was incorrect, unhelpful, or incomplete?

"height" and "width" elements are important since GaussianBlur creates significant content outside the original image

What did you expect to see?

I had no idea "height" and "width" were important until I tried using feGaussianBlur. Some guidance on it is important.

Do you have any supporting links, references, or citations?

see this StackOverflow question: https://stackoverflow.com/questions/75348069/how-do-i-stop-svg-gaussianblur-from-being-clipped

Do you have anything more you want to share?

No response