OK so PLO study going slowly as the outs are blowing my mind gradually the lights are coming on…but what is a “wrap”
I found this cool answer by JulioYalil on twoplustwo.com
Thirteen Outs
The thirteen out straight draw is the most common big straight draw, and it is commonly called a wrap draw. A common holding is four running cards that wrap around two cards on the board. With 9875, on a flop of 64x, the player has thirteen outs to a straight – four threes, three fives, three sevens, and three eights. If one of those cards comes, the player will have the nuts (the best possible straight) as long as the river card does not make a better hand possible. A thirteen out straight draw is roughly even money against a naked top set (meaning it is currently the best hand but has no chances to improve).
Sixteen Outs
The best straight draw possible is the sixteen out nut draw. This happens when the player holds two connecting cards, with two more running cards with no more than two gaps. 9864 on a flop of 75x has 16 outs to improve to the straight, and all sixteen outs will make a nut hand.
Seventeen Outs
A seventeen out straight draw occurs when we hold three cards that wrap around two cards on the board. 985x on a flop of 76x has seventeen outs (four fours, three fives, three eights, three nines, and four tens) to improve, but only eleven of those outs are to the nuts (the eights and nines make higher straights possible). Facing action, a player with this straight draw would need to be cautious, as a hand like JT98 or T985 would have the player dominated.
Twenty Outs
These draws come when holding a two-gap hand like T965, and flopping the two middle cards (87 in this case). Any four, five, six, nine, ten, or jack completes a straight. All of those outs are nut outs except the nines and tens (so fourteen nut outs).
When selecting starting hands, it is important to select hands that can make these big wrap straight draws (or flop straights with a chance to improve to a higher straight). Playing hands with all four cards connecting, with no more than two gaps total, gives the best chance of flopping a favorable draw.