can you setuid a ksh script?

[Ray Shwake]

Before we acquired a site license to Korn Shell (ksh-i), we utilized a
locally modified version of 'setsh' found in Wood and Kochan's _UNIX_
System_Security_. The original version would permit one to run a shell
program setuid or setgid, as is available with ksh's /etc/suid_exec, but
would not support the interactive running of such a shell (e.g. a menu).
Our version would support menus, and was primarily used for same.