do you know this weight/weightpaint tutorial?

high everybody,

i have watched a tutorial about manipulating weights in blender. it does not only show the tipical things like using weightpaint, but also shows how to let the weight fade to zero on a selected group of vertices and stuff like this using the weight menu instead of the brush.

stupid me, i have lost the link. have anybody seen this tut an remembers the link. this would be great.