Command/definestartstop

\definestartstop

Syntax

\definestartstop[...][...,...=...,...]
[...]	name
before	command
after	command
style	normal bold slanted boldslanted type cap small ... command
commands	command

Description

Used to define block level commands.

Example

Example: Long Quotations

\defineblank[ExtractDistance][3pt]
\definestartstop[Extract][
   style=slanted,
   before={\blank[ExtractDistance]
      \setupnarrower[left=1.5pc,right=1.5pc]
      \startnarrower[left,right]
      \noindent},
   after={\stopnarrower
      \blank[ExtractDistance]
      \indenting[next]}]
%Now the following commands are available: \startExtract and \stopExtract

\starttext
The extract from D.Knuth
\startExtract \input knuth \stopExtract
\stoptext