How to print header and footer to a netlist

[cadfile]

Hi, all,

I need to write some header and footer information to a netlist. I
tried
the following:

In my .simrc file, add the following:

simSetDef( 'hnlFormatterUnbindFuncs '(hnlPrintNetlistHeader))
hnlIfNoProcedure(hnlPrintNetlistHeader()
hnlPrintToString("This is my head")
)

But seems this doesn't work. Any idea?

Thanks,