Certain commonly used macros have insane macro shortcuts that do not start with backslash (
Originally, Ciro wanted to avoid those, but they just feel too good to avoid.
Every insane syntax does however have an equivalent sane syntax.
The style recommendation is: use the insane version which is shorter, unless you have a specific reason to use the sane version.
Insane in our context does not mean worse. It just mean "harder for the computer to understand". But it is more important that humans can understand in the first place! It is find to make the computer work a bit more for us when we are able to.