# Index and Query

You index documents into IDOL in IDOL IDX format or in XML format (directly or using a Connector). IDOL stores the concepts of the document. In response to queries, agents, profiles or content, it returns a link to the result document. IDOL also returns a percentage weighting, which indicates how relevant the result document is to the original query.

IDOL can return results as XML (even if the document was not in XML format when it was indexed) or other formats, such as plain text, using XSLT:

_FT_HTML5_bannerTitle.htm