If the halyards are not single, the yard must be sent down by a yard rope, like the topgallant yard. In some vessels, instead of making the sheets and clewlines fast to the jack, over-hand knots are taken in their ends, and they are let go.
Source: wiktionary
The only sail that is wholly ours is the spanker. They control absolutely--sheets, halyards, clewlines, buntlines, braces, and down-hauls--every sail on the fore and main. We control the braces on the mizzen, although they control the canvas on the mizzen.
Source: wiktionary