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}}. The two command {{code|1==\mathover[symbol]{}{}}} and {{code|\mathunder[symbol]{}{}}} are built and can be used directly. However one may define one's own commands.

To do so we define first a new stacker named here {{code|l1=MySymbol}}, and then invoking that with {{code|1=\definemathover}} we define two new commands {{code|l1=\interior}} and {{code|l1=\starredmystarred}}which can be used in math mode.

%\definemathstackers[symbol][voffset=-.30\mathexheight,hoffset=\zeropoint]\definemathover[MySymbol][interior]["2218]%this a small circle\definemathover[MySymbol][starredmystarred]["2717]% this is an asterisk

%Here is the new command \type{\interiorsetinterior{K}}: $\interior{K}$. Compare this to \type{\mathring{K}}: $\mathring{K} $. Here is the new command \neq type{\interiorsetmystarred{K}}: $\mystarred{K}$. Here are the built-in commands \type{\mathover} and \type{\mathunder}:

Here is the new command $\typemathover[symbol]{"2217}{A}$, % 2217 is an asterisk$\interiormathover[symbol]{K"2218}{A}: $, % 2218 is a circle$\interiormathover[symbol]{"2219}{KA}$. Compare this to , % 2219 is a bullet$\typemathunder[symbol]{"2217}{A}$,$\mathringmathunder[symbol]{K"2218}{A}: $,$\mathringmathunder[symbol]{"2219}{KA}$.