Q. While retrofeiting an existing application to support MBCS, what is 
   the guideline for changing the size of existing database fields ?

A. On average, doubling the number of bytes would roughly hold the same	
   number of character. 

Q. Does libcur in AIX support bidirectional languages, such as Hebrew
   and Arabics ?

A. No

Q. What is the extent of XPG4 support provided in LEX ?

A.

  In order to get the wide char functions in the final code
  you must let lex know that you want to use them by setting the
  corresponding multibyte table sizes to something greater
  than zero.  At the end of this note is an excerpt from the
  4.1 man page on lex which describes how to do this.  One misconception
  about XPG4 support for lex is that you can create a lex program
  and then run it in multiple locales.  However this is not possible
  as XPG4 states, "The lex utility is not fully internationalised in
  its treatment of regular expressions in the lex source code or
  the generated lexical analyser.  It would seem desirable to have
  the lexical analyser interpret the regular expressions given in
  the lex source according to the environment specified when the
  lexical analyser is executed, but this is not possible with the
  current lex technology."  In other words the lexical analyser
  must be generated and run in the same locale if you want to
  match anything that is locale specific.  If the user only uses
  the portable character set then lex should work in the other locales.
  The "." character can then be used to match everything else.
  However, the user should remember that range expressions are
  not portable between locales.



  LEX MAN PAGE
  ------------

  In the definitions section, you can set table sizes for the resulting
  finite state machine. The default sizes are large enough for small
  programs. You may want to set larger sizes for more complex programs.

  %an Number of transitions is n (default 5000)

  %en Number of parse tree nodes is n (default 2000)

  %hn Number of multibyte character output slots (default is 0)

  %kn Number of packed character classes (default 1000)

  %mn Number of multibyte "character class" character output slots (default
  is 0)

  %nn Number of states is n (default 2500)

  %on Number of output slots (default 5000, minimum 257)

  %pn Number of positions is n (default 5000)

  %vp Percentage of slots vacant in the hash tables controlled by %h
  and %m (default 20, range 0 <= P < 100)

  %zn Number of multibyte character class output slots (default 0)

  If multibyte characters appear in extended regular expression strings,
  you may need to reset the output array size with the %o argument (possibly
  to array sizes in the range 10,000 to 20,000). This reset reflects
  the much larger number of characters relative to the number of single-byte
  characters.

  If multibyte characters appear in extended regular expressions, you
  must set the multibyte hash table sizes with the %h and %m arguments
  to sizes greater than the total number of multibyte characters contained
  in the lex file.

  If no multibyte characters appear in extended regular expressions
  but you want '.' to match multibyte characters, you must set %z greater
  than zero. Similarly, for inverse character classes (for example,
  [^abc]) to match multibyte characters, you must set both %h and
  %m greater than zero.

  When using multibyte characters, the lex.yy.c file must be compiled
  with the -qmbcs compiler option.

Q. When using XFontSet, how is "point size" specified ?

A. An Internationalized application needs to consider the fact that multiple
   fonts may be required to render all characters of the locale using one
   or more fonts whose encodings may be different than the code set of
   the locale. XfontSet is used to specify a list of XLFD names, where
   only the base characteristics, such as point size, style and 
   weight, are significant. the encoding of the desired fonts is 
   determined from the locale, and any charsets specified in the XLFD base
   name lists are ignored and users need only concentrate on specifying 
   the base characteristics.

   Here is an example of the fontset specification:

       -dt-*-medium-*-24-*-m-* 

Q. What does the achronym "XOJIG" stand for ?

A. X-Open Joint Internationalization group.
   It is the locale registry at X-Open.

Q. How do you do I18N character manipulation in Fortran ?

A. It has do be done thru the interface to "C".