From the webpage:
XML Unicode provides some convenience methods for inserting Unicode characters. When it started, the focus was on characters that were traditionally inserted with named character entities, things like
é.In practice, and in the age of UTF-8, the “insert unicode character” function, especially the Helm-enabled version, is much more broadly useful.
You’re most likely going to want to bind some or all of them to keys.
…
Complete with suggested key bindings!
Oh, the image from Norman’s tweet:
FYI, the earliest use of helm-ification (note the hyphen) I can find was on November 24, 2015 by Christian Romney. Citation authorities remain split on whether Christian’s helm-ification or Norman’s helmification is the correct usage. 😉