🚀 go-pugleaf

One of my friend writing his project report is curious to know 
whether it is possible to do book style nembering of section headers 
in psroff + ms. This requires appending the chapter number to basic 
NH headers. I could not think of any way of achieving this as this 
question never confronted me in the past.

For example section headings should be:

chap1	  chap2

1.1  	  2.1
1.1.1     2.1.1
1.2       2.1.2
1.2.1     2.2
1.2.2     2.1.1
1.2.2.1   2.1.1.2
1.2.2.2   2.3
1.3  

I would appreciate if you have any macro designed to help in doing 
above or any other trick to achieve the same effect.

FAQ also does not say whether this is possible or not.

Regards,

B. kumar

(ps: would appreciate email as it would reach me faster than bulletin
board posting.)

email: bkumar@cs.ucl.ac.uk