There seems to be a problem in the referencing to equations in the version of MKIV I'm using: ConTeXt ver: 2009.06.03 11:48 MKIV fmt: 2009.6.3 int: english/english In the following code, the reference to the equation fails, resulting in '??'. Using MKII everything is fine. \starttext \placeformula[eq:pythag] \startformula a^2 = b^2 + c^2 \stopformula Pythagoras proposed \in{equation}[eq:pythag]. \stoptext Best regards, Richard Converteam UK Ltd. Registration Number: 5571739 and Converteam Ltd. Registration Number: 2416188 Registered in England and Wales. Registered office: Boughton Road, Rugby, Warwickshire, CV21 1BU. CONFIDENTIALITY : This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. Please consider the environment before printing this e-mail