Disjoined Prefixes- The TR+vowel principle

I was glancing at the October 1927 issue of The Gregg Writer and noticed a "centerfold" ad written in shorthand for a magazine. Quickly reading the sales message I was impressed that "material" was written disjoined M-A above an L, which prompted me to pull out the 1916 Manual. Sure enough, disjoined MA represents MA plus a vowel in the TR following. In fact if you have access to the 1916 Manual whether or not you write Anniversary, Simplified or DJS you might seriously consider adopting all the pre-Anniversary prefixes and suffixes into your writing. They're fairly ingenuous! For example, how many would recognize a disjoined PE written above S-N as the surname Peterson?

(by jrganniversary for everyone)