After searching I found out that this is generated by something called eztoc. Since I am running 3.8.1 and name=360_0_1 is generated. eZ 3.8.3 adds eztoc before the number as
You can automatically generate a linked table of contents for an ezxml attribute with the eztoc operator ( http://pubsvn.ez.no/nextgen/trunk/doc/features/3.8/TOC_operator.txt ).