MV - Doubt

Hi ALL,
When I query DBA_MVIEWS with the following query (
select OWNER, MVIEW_NAME, REWRITE_ENABLED, REWRITE_CAPABILITY from dba_mviews;) I get the REWRITE_CAPABILITY Column value as:

1) GENERAL
2) NONE
3) TEXTMATCH

Can someone explain what this mean?

Thanks

http://download-west.oracle.com/docs...86.htm#1296735

Thanks jmodic