When uttering the incantation, mark well that the rod is upon and not within the intake. The second incantation should not be uttered until all the fumes have come forth, then the way shall be clear for the sacred words to penetrate unto the heart of the engine. If the mounting be hot say the third rune, if it be cold the fourth rune is more appropriate. For then the wrath of the engine will be aroused...

"The Book of Five Runes"

In the name of the Omnisian and the God-Emperor of mankind