[NTG-context] Can texexec enable write18 at runtime

All, In GWTeX, I could turn on write18 here: % Enable \write18 (run shell processes from within TeX job) % Set to t if needed % (I think this might have security implications, especially if you % run tex jobs as administrator, so I keep it turned off by default shell_escape = f But, because of security, I am wondering if I can leave this as is and use texexec to enable write18 at runtime. Is there a switch for this? I know you can do it with pdflatex with: pdflatex --shell-escape David