Dear List,
I would like to know, what i can do, to geht all Math macros with MkII : \showmathcharacters in my Editor: WinEdt. I tried to compile it, but there is a mistake. I tried with \starttext and \stoptext, didn't work.

Command Line:   context.exe --synctex=-1 "Math 2.tex"
Startup Folder: C:\Users\Administrator
resolvers       | formats | executing runner 'run luatex format': C:/texlive/2020/bin/win32/luatex --jobname="Math 2" --fmt=C:/texlive/2020/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.fmt --lua=C:/texlive/2020/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.lui cont-yes.mkiv --c:currentrun=1 --c:fulljobname="./Math 2.tex" --c:input="./Math 2.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:synctex="-1" --c:texmfbinpath="C:/texlive/2020/bin/win32"
This is LuaTeX, Version 1.12.0 (TeX Live 2020/W32TeX)
 system commands enabled.
open source     > level 1, order 1, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-yes.mkiv'
system          >
system          > ConTeXt  ver: 2020.03.10 14:44 MKIV beta  fmt: 2021.1.18  int: english/english
system          >
system          > 'cont-new.mkiv' loaded
open source     > level 2, order 2, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-new.mkiv'
system          > beware: some patches loaded from cont-new.mkiv
close source    > level 2, order 2, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-new.mkiv'
system          > files > jobname 'Math 2', input './Math 2', result 'Math 2'
fonts           > latin modern fonts are not preloaded
languages       > language 'en' is active
system          > synctex functionality is enabled, expect 5-10 pct runtime overhead!
open source     > level 2, order 3, name 'C:/Users/Administrator/Math 2.tex'

tex error       > tex error on line 1 in file C:/Users/Administrator/Math 2.tex: ! Undefined control sequence

l.1 \showmathcharacters


1 >>  \showmathcharacters

mtx-context     | fatal error: return code: 1


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 ConTeXt Compilation Report (Pages: 0)

 Errors: 1   Warnings: 0   Bad Boxes: 0
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Many thanks

Uschi Hermann