Default column and star for replicates

[paulamartingonzalez]

Hi! I have a question similar to this one posted on biostars: https://www.biostars.org/p/9503101/

Essentially, I am struggling to understand what the star in the Default column means in an experiment such as the below:

Is it better to use the ones with the star? How's this assigned? I've found in the terms a few metrics for replicate concordance (https://www.encodeproject.org/data-standards/terms/) and I presume there might be some relationship?

Thanks in advance!