Manual gas oven, help??

I’ve used gas stoves & ovens before but they’ve all had an ignition source. Our new rentals oven doesn’t have any ignition source. The stovetop is easy enough to light with a lighter but I cannot work out the oven and it’s impossible to find a guide online since they’re all based on ovens that DO have ignition but it’s just out of order. We’ve tried holding a lighter to the line where the gas is expelled but it just won’t light. To describe the oven; - 1 control knob for temperature/gas output - 1 row at the bottom back of the oven where the gas will be expelled submitted by /u/maple788797