       infox option

              Return  information  about  Extended  Tcl,  or  the
              current application.  The following  infox  command
              options are available:

              version
                     Return  the  version number of Extended Tcl.
                     The  version  number  for  Extended  Tcl  is
                     generated  by  combining the base version of
                     the standard Tcl code  with  another  number
                     indicating the version of Extended Tcl being
                     used.

              patchlevel
                     Return the patchlevel for Extended Tcl.

              have_fchown
                     Return  1  if  the  fchown  system  call  is
                     available.  This supports the -fileid option
                     on the chown and chgrp commands.

              have_fchmod
                     Return  1  if  the  fchmod  system  call  is
                     available.  This supports the -fileid option
                     on the chmod command.

              have_flock
                     Return 1 if the flock command defined,  0 if
                     it is not available.

              have_fsync
                     Return   1  if  the  fsync  system  call  is
                     available and the  sync  command  will  sync
                     individual  files.  0 if it is not available
                     and the sync command will  always  sync  all
                     file buffers.

              have_ftruncate
                     Return  1  if the ftruncate or chsize system
                     call is available.  If it is, the  ftruncate
                     command -fileid option maybe used.

              have_msgcats
                     Return   1   if  XPG  message  catalogs  are
                     available, 0 if they are not.   The  catgets
                     is  designed to continue to function without
                     message  catalogs,  always   returning   the
                     default string.

              have_posix_signals
                     Return  1  if  Posix  signals  are available
                     (block and unblock options available for the
                     signal  command).   0  is  returned if Posix
                     signals are not available.

              have_signal_restart
                     Return  1   if   restartable   signals   are
                     available (-restart option available for the
                     signal   command).    0   is   returned   if
                     restartable signals are not available.

              have_truncate
                     Return  1  if  the  truncate  system call is
                     available.  If it is, the ftruncate  command
                     may truncate by file path.

              have_waitpid
                     Return  1  if  the  waitpid  system  call is
                     available and  the  wait  command  has  full
                     functionality.   0  if  the wait command has
                     limited functionality.

              appname
                     Return the symbolic application name of  the
                     current application linked with the Extended
                     Tcl library.  The C variable tclAppName must
                     be  set  by  the  application  to  return an
                     application   specific   value   for    this
                     variable.

              applongname
                     Return  a  natural  language  name  for  the
                     current   application.   The   C    variable
                     tclLongAppName    must   be   set   by   the
                     application   to   return   an   application
                     specific value for this variable.

              appversion
                     Return  the  version  number for the current
                     application.  The C  variable  tclAppVersion
                     must  be set by the application to return an
                     application-specific    value    for    this
                     variable.

              apppatchlevel
                     Return   the   patchlevel  for  the  current
                     application.       The      C       variable
                     tclAppPatchlevel   must   be   set   by  the
                     application  to   return   an   application-
                     specific value for this variable.
