concatenating a string to a title

I added sect2class tag that is equivalent 
to sect2, and I'm trying to concatenate a string to its title avoiding to write 
that sting in title each time I use this tag. I would use it like 
this:

 

<sect2class>

    
<title>whatever-object<title>

</sect2class>

 

and get "whatever-object [class]"

 

so I thought adding this on 
element-title-sosofo function

 

((equal? (gi nd) (normalize "sect2class")) 
(concatenate 'STRING (section-title-sosofo nd) " [class]"))

 

but I'm no sure what is the format returned by 
section-title-sosofo or if concatenate function is supported

 

any suggestion?

----------------------------------------
Juan Raúl Martínez 
Gutiérrez
TechnoSoft de México
Tel: +52 (81) 83-17-40-71 ext 
110

 

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