File type = "ooTextFile"
Object class = "TextGrid"

xmin = 0 
xmax = 1 
tiers? <exists> 
size = 1 
item []: 
    item [1]:
        class = "TextTier" 
        name = "test" 
        xmin = 0 
        xmax = 1 
        points: size = 3 
        points [1]:
            number = 0.10000000000000007 
            mark = "point 1" 
        points [2]:
            number = 0.5 
            mark = "point 2" 
        points [3]:
            number = 0.8000000000000003 
            mark = "point 3" 
