Horizontal alignment of texts in different nodes

I am attempting to draw a tree using the commands from the Trees  
library, but one small matter has defeated me. I have nodes  
containing 2-3 lines of text, and these nodes are horizontally  
aligned with each other. I would like, say,  the two lines of text in  
horizontally adjacent nodes also to be horizontally aligned, but this  
does not always happen. If the top line of one node contains a letter  
with an ascender (e.g. b, d, f) and the top line of the adjacent  
node  contains only letters without ascenders (e.g. c, e, g, s), then  
the top-line baselines are not aligned from node to node because the  
presence of the ascender in one changes its line height. Spacing  
between the lines of the label also seems to be altered by ascenders  
and descenders.

I have the feeling that \pgftext ought to offer a solution to this  
problem, but I am unable to make it work inside a tree node.

Any solutions would be very gratefully received.

Malcolm Ross
_____________________________________

Malcolm D. Ross
Professor, Department of Linguistics
Research School of Pacific and Asian Studies
Building No. 9, The Australian National University
CANBERRA A.C.T. 0200, Australia

http://rspas.anu.edu.au/people/personal/rossm_ling.php
http://rspas.anu.edu.au/linguistics/projects/biomdr.html

ANU CRICOS Provider Number is 00120C

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