viññāpana : [nt.] information; introduction.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Viññāpana (adj.) [fr. viññāpeti] instructing, informing A ii.51, 97. -- f. viññāpanī instructive, making clear (of speech) D i.114 (atthassa viññāpaniyā=viññāpanasamatthāya DA i.282); A iii.114; Dh 408 (=attha˚ DhA iv.182); Sn 632.

Pali-English Dictionary, TW Rhys Davids, William Stede,