Setting background color to text in ConTeXt (Mark IV)

Question

I need to highlight some text in ConTeXt to get something like this:

Concerning background colors, all I've found in the manual is some example with \framed command, which is inappropriate to me because it breaks the layout.

Answer 1

You can use the command \defineunderbar. See example:

\setuplayout
  [width=9.4cm]

\definebar
  [foobar]
  [color=yellow,
   rulethickness=1.2em,
   offset=1.2,
   continue=yes,
   order=background]

\starttext
There must be \foobar{a way to set the background color when I need to
highlight multiple lines of text. And then return to normal mode} without
affecting the layout.
\stoptext