n the Verilog portion and the Tcl portion.  One of
the following security settings can be used for this task. 
<ul>

<li><b>fully enabled:</b> Allows unrestricted use of the $tkg$exec()
task.  This setting is not recommended.

<li><b>enabled only for registered functions:</b> Allows only
functions that have been registered as safe or necessary for a VPD to
be executed.  The '[' and ']' characters are disallowed when this
setting is selected.

<li><b>disabled:</b> The $tkg$exec() task is completely disabled 