El vie, 22 de ene. de 2021 a la(s) 17:39, Wolfgang Schuster (
wolfgang.schuster.lists@gmail.com) escribió:

> Jairo A. del Rio schrieb am 22.01.2021 um 23:14:
> > How strange. I guess you don't have your modules installed. In such a
> > case, you could install them from modules.contextgarden.net
> > <http://modules.contextgarden.net> and put content under texmf-modules
> > so after mtxrun --generate and context --make examples work.
>
> The core function of the annotation module (custom environment
> with key-val-arguments) is part of ConTeXt but it doesn't create
> new environment commands.
>
> \defineuserdata
>    [zzz]
>    [alternative=zzz,
>     after={\blank[10mm]}]
>
> \defineuserdataalternative[zzz][renderingsetup=userdata:zzz]
>
> \startsetups[userdata:zzz]
>      \hrule
>      \doifsomething{\userdataparameter{title}}
>        {\bold{\strut\userdataparameter{title}}
>         \blank}
>      \strut\getuserdata
> \stopsetups
>
> \starttext
>
> \startuserdata[zzz]
> \input weisman
> \stopuserdata
>
> \startuserdata[zzz][title=Ward]
> \input ward
> \stopuserdata
>
> \stoptext
>
>
>  > Another possibility is to use \do...empty and such, but it feels odd
>  > when a module for that is already available.
>
> No \do...empty (LMTX only):
>
> \tolerant\protected\def\startzzz#=%
>    {\hrule
>     \doifsomething{#1}{\bold{\strut#1}\blank}}
>
> \protected\def\stopzzz
>    {\blank[10mm]}
>
> \starttext
>
> \startzzz
> \input weisman
> \stopzzz
>
> \startzzz{Ward}
> \input ward
> \stopzzz
>

A nicer way to go, indeed.


> \stoptext
>
>
> Wolfgang
>


Jairo