Significados de popular lines en inglés

In his note on the most popular lines in the "Divine Comedy,"

One of our most popular lines of toilet paper is Quilton 20 pack 3-ply.

One of the EFF leader's most popular lines of criticism towards the media is that they are friends with Gordhan.

At Mothercare, trading problems were exacerbated by failure in buying and merchandising which led to understocking in the most popular lines.

He knows the trade routes (the easier, more popular lines) from the hard-core routes that only the toughest, most seasoned climbers would tackle.