dbcc traceon 208

Hello:

I am supporting an application on mssql 6.5,sp4.

Yesterday I as creain an index on a large table-- it took 4 1/2 hours.
Toward thenedof the process, I noticed the error log contained multiple
entries of 'dbcc traceon 208' with spidnumber after it. I wasn't able to find any information what tis is about. The index finished shortly after. From I saw going on there as only some selects agist the dtaabse but on that particular table for which I was creating an index.

Does any one have any information on what that was?

Thanks.