Technical directions aim to enable you to build, start, use, set up, dismantle a product, or anything similar.
ANSWER:
its the last one pervade means to....hmmm... lets say to spread, infuse, flow through...etc
exp : "my baby brothers diapers stank pervaded the air which i now cant breath in"
so it doesnt make sense to say " my father absolutely pervade me to see that boy"
its like saying "my father absolutely diffuse through me to see that boy" no...just no
~batmans wife dun dun dun....
In my opinion, you can use it to define words and find more suitable words (they usually have a thesaurus built into the definition), and find words that seem more elegant or mature.
This means you change your tone and mood in a variety of ways for an answer until it finally dawns on you.