Layout Option Skip Conditions Documentation

I have an old database that has a bunch of skip conditions. It was upgraded from v4.2.2 ubuntu. They have a bunch of LBFs that is not behaving well in v6.1.0.

 a:2:{s:6:"action";s:4:"skip";i:0;a:5:{s:2:"id";s:7:"css_a02";s:6:"itemid";N;s:8:"operator";s:2:"eq";s:5:"value";s:1:"0";s:5:"andor";s:0:"";}}

Is there any documentation that can shed some light on how these skip conditions are built?

The problem is that I am getting a javascript error message.

{target:"css_desc03", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_desc03a", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_line3", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_q03", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_a03", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_desc04", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_desc04a", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_line4", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_q04", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_a04", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_desc05", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_line5", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_q05", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_a05", action:"skip", id:"css_a02", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_q06a", action:"skip", id:"css_a06", itemid:null, operator:"eq", value:"0", andor:""},
{target:"css_a06a", action:"skip", id:"css_a06", itemid:null, operator:"eq", value:"0", andor:""} 

Can anyone point me in the direction of documentation?