/sys$common/syshlp/HELPLIB.HLB  —  CRTL  Version-Dependency Tables, V6.2 and Higher
    The following additional functions are available on OpenVMS VAX
    and OpenVMS Alpha Version 6.2 and higher:

       catclose     catgets      catopen      fgetwc
       fgetws       fputwc       fputws       getopt
       getwc        getwchar     iconv        iconv_close
       iconv_open   iswalnum     iswalpha     iswcntrl
       iswctype     iswdigit     iswgraph     iswlower
       iswprint     iswpunct     iswspace     iswupper
       iswxdigit    nl_langinfo  putwc        putwchar
       strnlen      strptime     towlower     towupper
       ungetwc      wcscat       wcschr       wcscmp
       wcscoll      wcscpy       wcscspn      wcsftime
       wcslen       wcsncat      wcsncmp      wcsncpy
       wcspbrk      wcsrchr      wcsspn       wcstol
       wcstoul      wcswcs       wcswidth     wcsxfrm
       wcstod       wctype       wcwidth      wcstok
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