[NTG-context] vertically centered aligment of different sized texts

hi there, another question to which shamefully i cannot find the answer. perhaps it's just too late... consider the following example: \definefont[BigFont][Regular sa 3] \starttext {\tfc The {\BigFont 7}\high{th} Seal} \stoptext how can i make that line vertically centered, like --, the /th seal / :) is \startalignment used for this? -f -- every great journey begins with a single step.