Qshell - redirect ALL stdout from within script

I'm looking to redirect all stdout to log files.
At the top of my script I have:

touch -C 1208 /iStage/logs/stdout.txt
1>>/iStage/logs/stdout.txt

So the log file gets created and then redirect should force stdout
(file descriptor 1) to append to stdout.txt.

However, when run from interactive Qshell session, redirection doesn't
happen and stdout still gets displayed on the monitor.

I've seen references for stdout for a single command but not for
everything. Also want to run in script rather than use ">>" on the QSH
command.

Thanks,

Keith