Dear all!

I want to define a command that is to be used in a section title. Also I
want to use \autoinsertnextspace with this command. In the following MWE,
why do \This and \AName not work, while \TEX does work?

I appreciate any feedback,
Christoph

MWE:

\setupinteraction[state=start]
\setupinteractionscreen[option=bookmark]
\placebookmarks[section][section]

\def\What{This\autoinsertnextspace}

\definesorting[Name]
\setupsorting[Name][next=\autoinsertnextspace]
\Name[AName]{Knuth}

\usemodule[abr-01]
\setupsorting[logo][next=\autoinsertnextspace]

\starttext
\startsection[title={\What is puzzling}]\stopsection
\startsection[title={\AName is puzzling}]\stopsection
\startsection[title={\TEX is puzzling}]\stopsection
\stoptext