This partial closer EA is able to close your trades partially, which may be very useful for your manual trading experience. For example you have a buy trade with 0.60 lots and you want to close 50% of this trade once the profit is 30 pips. EA closes 50% (0.30) of the trade and you still have another 50% (0.30) to go. Then you drag your stop loss price to +10 pips for example. Your trade is a total win. It's just one of the ways to use this tool.