Premise
The keyboard is the priest’s vocoder: the device by which the Lingua-Technis is, in our age, transmitted between the operator and the Machine Spirit. The act of taking the keys is therefore a small but non-trivial ritual moment.
This is extended, not adopted: there is no specific Mechanicus parallel for this exact form, but the spirit of Cant of Awakening applies.
Form
Approximately three to five seconds. Performed each time the priest returns to the keys after any interruption — a meeting, a meal, a walk.
The cant
Spoken aloud, sub-vocally, or thought-only — preference is the priest’s:
“By the Lingua-Technis. By cant. With care.”
Or, in shorter form when re-engaging quickly:
“With care.”
Three words is the floor. Below three words, the rite collapses into mere keystroke. Above six it becomes ostentation.
Operational claim
There is a measurable effect: the brief pause inserts a moment of intent before action. The first keystroke after the cant is rarely the catastrophic one. (The catastrophic keystroke is the one made while thinking about something else entirely.)