Greening-up.
If you've traded a particular selection successfully and have a pre-race profit of say £15 for that horse, the greening up button will lay a specific amount at the current lay price (or back if you are -£15) to ensure that £15 profit is spread across the whole field.
If current odds are 2.0 for example the green-up facility will take your £15, divide by current odds of 2.0 being £7.50 and lay that horse for £7.50. If he wins your profit is £15(trading profit) - £7.50(lay bet) = £7.50 and if he loses you also win £7.50 as you've laid him.
Remeber that if you're in profit you're better off greening up at the lowest possible price and if you're minus then green up at the highest possible price. Don't, however, be tempted to attempt to green up in play.
I hope this clears it up for you.
Zak
QUOTE(jrp @ Apr 30 2006, 08:49 PM)

Hi bobsy,
Bet Angel is a really neat piece of software to trade on Betfair although a bit cluttered in it's visual representation, however you MUST be cognisant of what trading entails to use it profitably.
From memory
Bet Angel has a "training" mode that allows you to use their software in real time without committing funds - suggest you try this and also view their excellent online tutorials to see if its suits your style and level of undertanding.
The "greening" up feature needs to worked at - ie you have to have had the right selection(s) and circumstances (ie laid low/backed high) in order to convert over to a "win-win" situation, again tutorials and paper trading for a short while are the only ways to find out for yourself here.
Bet Angel's cost of sub £100 makes it an ideal way of experimenting whether or not it's for you but remember, you "pull" the levers and "press" the proverbial buttons so try it out and let us all know your thoughts....
I tried it some time ago and found it really good in applications terms - it was this that gave me the spark to do my own thing.
Trade well.