These features include the ability to pin a post to the top of Timeline, the ability to highlight posts which will expand to occupy the width of a Page, and highlighted friend activity surfaced on the right side of Timeline.

FORBES: Facebook's Storied Revolution

On rare occasions when a new screw length or width was needed, an engineer would consult a 300-page manual dating from 1936 that explains the relationships between certain heights and pitches of threads and the lengths and widths of the resulting screws.

FORBES: Magazine Article