vs:characters -- vonuvoli Export (vonuvoli characters)
char?;char-numeric?;char-alphabetic?;char-upper-case?;char-lower-case?;char-alphabetic-or-numeric?;char-whitespace?;char-control?;char-ascii?;char-ascii-numeric?;char-ascii-numeric-8?;char-ascii-numeric-16?;char-ascii-alphabetic?;char-ascii-upper-case?;char-ascii-lower-case?;char-ascii-alphabetic-or-numeric?;char-ascii-whitespace?;char-ascii-control?;char-ascii-punctuation?;char-ascii-graphic?;not-char?;not-char-numeric?;not-char-alphabetic?;not-char-upper-case?;not-char-lower-case?;not-char-alphabetic-or-numeric?;not-char-whitespace?;not-char-control?;not-char-ascii?;not-char-ascii-numeric?;not-char-ascii-numeric-8?;not-char-ascii-numeric-16?;not-char-ascii-alphabetic?;not-char-ascii-upper-case?;not-char-ascii-lower-case?;not-char-ascii-alphabetic-or-numeric?;not-char-ascii-whitespace?;not-char-ascii-control?;not-char-ascii-punctuation?;not-char-ascii-graphic?;char<?;char<=?;char=?;char>=?;char>?;char-ci<?;char-ci<=?;char-ci=?;char-ci>=?;char-ci>?;not-char<?;not-char<=?;not-char=?;not-char>=?;not-char>?;not-char-ci<?;not-char-ci<=?;not-char-ci=?;not-char-ci>=?;not-char-ci>?;char->integer;integer->char;char-upcase;char-downcase;char-foldcase;digit-value;