I got stuck with the following:
According to Markus Kohm (Koma-script) one can declare a new command for
sub-scribing chemical formula such as
H_2
by declaring a new command \Molek
\newcommand*{\Molek}[2]{#1\texstsubscript{#2}}
which I did by putting this in the preamble of my Koma-book document.
In the text I write in an ERT-box
\Molek H{2}
but get 'Undefined control sequence' \Molek H{2}
Same error, if I put only
\Molek
in ERT
and
H{2}
afterward.
I use koma(book) for my LyX document.
Can somebody give me some help?
Wolfgang
