newsticker--buffer-do-insert-text

newsticker--buffer-do-insert-text is a compiled Lisp function in `newst-plainview.el'.

(newsticker--buffer-do-insert-text ITEM TYPE FEED-NAME-SYMBOL)

Actually insert contents of news item, format it, render it and all that.
ITEM is a news item, TYPE tells which part of the item shall be inserted,
FEED-NAME-SYMBOL tells to which feed this item belongs.