file permissions for HILIS4 fastcgi process:
.aspell.$ctr.temp 664 raj:www-data (temporary file for new words pending merge with .pws)
.aspell.$ctr.pws  664 raj:www-data (personal dictionary)
.aspell.en.prepl  664 raj:www-data (stores replacement pairs when you tell aspell to learn from mistakes - not used)
en-medical.rws    644 raj:raj (just needs to be readable)

# to create master/extra-dict (needs to be done in situ - 32bit & 64bit not cross-compatible):
aspell --lang=en create master ./dictionary.local < space_separated_word_list
