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This document describes the annotation guidelines for marking up text according to the TimeML language. It presents the results to date of discussions and trial annotations of the TERQAS annotation working group as well as modifications added during the TANGO workshop. The document is organised as follows. The next section explains what the TimeML tags (XML elements) are and how to annotate them. It also specifies for each tag what its attributes are and provides a BNF definition for the tag and its attributes. While this exposition contains many examples illustrating what and how to tag, the examples focus, for clarity's sake, on the tag under discussion at any given point. The appendix found a the end of this chapter provides a set of fully annotated examples, illustrating all of the interactions between the various entity and relational tags. For the sake of convenience, I&P (02) will be used to refer to [?] and TIDES (02), to [?] throughout the whole document.