…master and suppress their adverse opposite states, and by means of higher knowledge they may master the objects of mind. They are means for…

Advertence: Directing of mind to the object: āvajjana is one of the functions of consciousness viññāna-kicca. Cf. manasikāra

…is the pushing back of adverse things, such as the 5 mental hindrances nīvarana q.v, etc., through this or that mental concentration…