An simple example:
\starttext
\setupframed[align=right,frame=off,offset=none]
\framed{A\hskip3em\framed{B\\ C}}
\stoptext
How can I set the framed
which contains B\\ C
so that the baseline of \framed{B\\ C}
can have the same baseline with the first line B
?
The same result can be achieved in plain TeX as follows:
\hbox{\vtop{\hbox{A}}\hskip3em\vtop{\hbox{B}\hbox{C}}}
What's the method in ConTeXt?