There is a 3-byte ESC code overhead in the DDF internal buffer for each word in the text buffer. There is a 1-byte ESC code overhead for each blank and for each newline character. If fReferenceType is REFERENCE_BY_ID, then there is a (3-byte + Reference length) ESC code overhead. For a fReferenceType of REFERENCE_BY_RES, the overhead is 5 bytes. Finally, there is a 3-byte ESC code overhead that is required for ending the hypertext link.