Mm - hmm.
and then you can have lots of different sections , each of which have I Ds attached to it , and then you can refer from other sections to those I Ds , if you want to. So that , um  so that you start with  with a time - line tag. " Time - line ". And then you have a bunch of times. I don't e I don't remember exactly what my notation was ,
Oh , I remember seeing an example of this.
but it