Here is the content of the office_module.txt file used for building Impilo 11.04.

#
# Office-like applications for Impilo
#
abiword
abiword-plugin-grammar
abiword-plugin-mathview			
aspell-en
aspell-fr
evince					 
gnumeric
gnumeric-plugins-extra
gnumeric-doc
language-support-fr
language-pack-fr
language-support-en
language-pack-en
ttf-liberation