Firebug break on error functionality

Question

I was wondering when a error message pops up in Firebug, what does that disable mean? I tried to search in Firebug Docs but no luck. Can someone please advise? Thanks.

Answer 1

When you click Disable, it stops the code from breaking at that point during future runs.
It also marks the line with a breakpoint and disables it.

Note: Extra breakpoint added for reference.