I have a file that currently contains sample times that being continuously written to the file:

[SampleTimes]
0=0
853=0.021325
1706=0.04265

I want to add a commment section so that the file will look like this:

[SampleTimes]
0=0
853=0.021325
1706=0.04265

[Comments]
3.69555,0,0,65536,test text
7.25082,0,0,65536,asdffdsa
9.74452,0,0,65536,qwert

However, the comment section are events that are also being continuously written to file. Is there a way to shift the cursor to append to the sample times when needed and then shift it back to append to the end of the file when a comment comes in?

I’ve seen other posts but they all recreate the file which I can’t do as there could be some data loss.