[Gmsh] Physical entity as element tag in .bdf file import

[jean pierre aubry]

hello

when importing a .bdf and saving it as .msh i get the following type of
line in the $Element section 
54727 3 2 0 37 63480 63476 63477 1399
where all first tags are set at 0

where i want the first tag to be a physical, number 37 in this case,
something like this 
54727 3 2 37 37  63480 63476 63477 1399

i did this job with a bit of patience, with conditional find an replace
in the .msh file up to now but this post opens my mind

http://www.geuz.org/pipermail/gmsh/2013/007959.html

any idea about how to it at import time

jean pierre aubry