[Groff] a node is illegal within \X

[Rick Richardson]

Trying to put in PDF marks into an MM document.  Defined this
heading user exit macro to get called when the heading has been
produced...

        .de HZ
        .ds hhh \\*[hd*mark] \\$3
        \X'ps: exec [ /View [/XYZ 44 730 1.0] /Title (\\*[hhh]) /OUT pdfmark'
        ..

This works great and I get the marks I want, except that I get
a slew of warning messages from groff, one warning message per
invocation of .HZ.

        sample.mm:86: a node is illegal within \X
        sample.mm:88: a node is illegal within \X

How can I convince groff that everything is copasetic with what
I've written?  Or is there a better way to write this?

Please cc me on any replies.

Thank you.

-Rick Richardson

-- 
Rick Richardson  address@hidden  http://home.mn.rr.com/richardsons/
Twins Cities traffic animations are at http://members.nbci.com/tctraffic/#1

Twin Cities ramp meters work by: 1) causing people to take alternate routes;
2) causing people to drive at off peak times;  3)  compensating for merging
lanes which were designed for canadian geese and are far too short.