Paragraph {{gmslaprov|5.6}} is the clincher in the "aggregate portfolio collateralisation" netting analysis started in paragraph {{gmslaprov|5.4}}. It means you don't have to gross up collateral flows across portfolios of longs and shorts.
Sections {{gmslaprov|5.6}} and {{gmslaprov|5.7}} need to be read together (and also see [[GMSLA Netting]])