In the original vi, if you use cw to change it into a longer word, you can't just use <DEL> to remove spaces after the word, but have to use <ESC> and x. So R i

In the original vi, if you use cw to change it into a longer word, you can't just use <DEL> to remove spaces after the word, but have to use <ESC> and x. So R is often more practical, and it got into my muscle memory before vim existed.