Report Abuse. You can use a flag in any programming language. It's just a variable to hold the state of a condition. Most are boolean (basically, on or off, 0 or 1) but can be any value. A simple flag could be, if a certain condition is true then flag = 1. Then later in the program the value of flag can be tested.eport Abuse. You can use a flag in any programming language. It's just a variable to hold the state of a condition. Most are boolean (basically, on or off, 0 or 1) but can be any value. A simple flag could be, if a certain condition is true then flag = 1. Then later in the program the value of flag can be tested.
The way I interpreted it, was that you can leave when you are about 25 weeks pregnant. I think you get something like 15 or 17 weeks pregnancy leave, and then 35 weeks maternity leave. If you save them up, though, you get almost a full year with baby.
The earliest that you can start your maternity leave is 11 weeks before your expected week of childbirth, which is when you are about 29 weeks pregnant. To ensure that you get all your rights, you should use the due date given on the MAT B1 pregnancy certificate that your midwife or GP will give you.