Hi, I am using R package AnnotationHub to access public database. I am curious about what information can we get from title of output query? I ran a query and I get output like

title AH46645 | UCSF-UBC.H1.H3K4me3.H1EScd1-me3K4-A.gappedPeak.gz

with other information like species, taxonomyid, genome, description etc. What information can I get from this title. I searched for this title in google and it brought me this page. I can download the data from here but still I can not get what different parts of the title mean? Can anyone share the link or info how do these institutions assign titles to data files? Thanks