Changes

ConTeXt has a nice structure called {{code|1=mathstackers}} in order to define new math commands in which some characters are stacked over another one. For more information refer to {{src|math-stc.mkiv}}.

</texcode>

When typeset in {{code|1=mkiv}} one can see that the command {{code|1=\interior{K}}} shows the letter K with a small circle above it.