hi everybody, after a 2 year hiatus I'm just giving `context' a second try (so, really not much experience so far). I updated to the latest version (0.63) before proceeding. two observations: 1. in a new document including assorted equations everything went fine until I tried something like \startformula x = \left 1 + 2 \right \stopformula which caused an error: 8<------------------------------------------------------------------ ! Undefined control sequence \strc_synonyms_insert_meaning ...urrentsynonymtag {#2}\fastsetup {\??simplel... \math_left ...ame \??mathleft \meaning \nexttoken \endcsname \expandafter \l... l.472 x = \left ( 1 + 2 \right ) 8<------------------------------------------------------------------ 2. an old document (not modified these 2 years) does no longer compile due to apparently the same problem (not understanding `\left', `\right'. question: my understanding is, that `context' supports "everything" out of the box (notably equations) and there is no need for explicit loading of additional packages? so `\left' etc. _should be defined (and it _used_ to work 2 years ago)? what am I missing? thx, joerg -- Using Opera's revolutionary email client: http://www.opera.com/mail/