A.D.S.I.T.
“it can be said the most enigmatic of Rudolf II. A.D.S.I.T. When he was thinking of declaring war on the Turks, he wanted to indicate individual words in each letter, as if: Adiuvante Domino Superabo Imperatorem Turcarum, With the help of the Lord, I will defeat the Turkish emperor.” – Jakob Bosch aka Boschius, Symbolographia sive de arte symbolica, 1702, class 4, emblem CXCIV 194.
F.E.R.T.
“F.E.R.T. Fortitudo Eius Rhodum Tenuit, His strength held Rhodes.” – Jakob Bosch, Symbolographia, class 4, CXCIV 195.
A.E.I.O.U.
“And the most famous is A.E.I.O.U. vowels in the Latin alphabet: to the Emperor Frederick of Austria of his name IV. Usitatum and Imprint of the Imperial Seal: whose various meanings are reported: and they are approximately as follows: for example the rightly chosen eagle conquers all.” – Jakob Bosch, Symbolographia, class 4, CXCVI 196.
Secreta docent et dissita
They teach secret and scattered things.
“They teach dark and remote deeds. Literary Character Dossiers.” – Jakob Bosch, Symbolographia, class 3, DXXXII 532.