Hi wince,
Before Pans Ops 4, the charts GA procedures were OK for an aircraft which could do minimum 2.5% climb gradient. There was an allowance for a 7 miles level acceleration, then a further climb at 2.5% (I think) to the stop altitude.
Pans Ops 4 doesn't do the maths any more - it's up to the operator to ensure their overall gradient (including any level acceleration) meets the gradient specified on the chart.