• when managing the character strings
• when managing the data files
• when managing the controls that display data coming from character strings or data files.

• the UNICODE String type
• conversion functions:
  These functions are used to perform conversions from Ansi to Unicode and from Unicode to Ansi. These conversions are automatically performed when handling character strings (see the next paragraph).
  

  Versions 09 and later AnsiToUnicode New in version 09 AnsiToUnicode AnsiToUnicode	Converts: an ANSI string (Windows) to a UNICODE string. a buffer containing an ANSI string (Windows) to a buffer containing a UNICODE string.
  Versions 10 and later StringToUTF8 New in version 10 StringToUTF8 StringToUTF8	Converts an ANSI or UNICODE string to UTF-8.
  Versions 09 and later UnicodeToAnsi New in version 09 UnicodeToAnsi UnicodeToAnsi	Converts: a character string in UNICODE format into a character string in ANSI format (Windows). a buffer containing a character string in UNICODE format into a buffer containing a character string in ANSI format (Windows).
  Versions 10 and later UTF8ToString New in version 10 UTF8ToString UTF8ToString	Converts a string in UTF8 format into a string in ANSI or UNICODE format.
• the use of functions for handling the character strings:
  

  Versions 09 and later Complete New in version 09 Complete Complete	Returns a character string of a specified length.
  Versions 09 and later CompleteDir New in version 09 CompleteDir CompleteDir	Adds a backslash to the end of a string, if necessary.
  Versions 09 and later ExtractString New in version 09 ExtractString ExtractString	Allows you to: extract a substring from a string based on a specified string separator. search for substrings in a string based on a specified string separator.
  Versions 09 and later Left New in version 09 Left Left	Extracts the left part (i.e., the first characters) from a string or buffer.
  Versions 09 and later Length New in version 09 Length Length	Returns: the size of a character string, which means the number of characters found in the character string (including the space and binary 0 characters). the size of a buffer, which means the number of bytes found in the buffer.
  Versions 09 and later Middle New in version 09 Middle Middle	Extracts: a substring from a string starting at a specified position. part of a buffer starting at a specified position.
  Versions 09 and later NoAccent New in version 09 NoAccent NoAccent	Transforms the accented characters found in a character string into non-accented characters.
  Versions 09 and later NoSpace New in version 09 NoSpace NoSpace	Returns a character string without the space characters: found on the right and on the left. found inside the string.
  Versions 09 and later Position New in version 09 Position Position	Finds the position of a specified string within another string.
  Versions 09 and later PositionOccurrence New in version 09 PositionOccurrence PositionOccurrence	Finds the Xth position of a string within another string.
  Versions 09 and later RepeatString New in version 09 RepeatString RepeatString	Concatenates N repetitions of the same character string or buffer.
  Versions 09 and later Replace New in version 09 Replace Replace	Replaces all the occurrences of a word found in a string by another word.
  Versions 09 and later Reverse New in version 09 Reverse Reverse	Returns the character that corresponds to the difference between the ASCII code of a specific character in a string and 255.
  Versions 09 and later Right New in version 09 Right Right	Extracts the right part (i.e., the last characters) from a string or buffer.
  Versions 09 and later StringCompare New in version 09 StringCompare StringCompare	Compares two strings character by character: according to the sequence of ASCII characters. according to the alphabetical order.
  Versions 09 and later StringCount New in version 09 StringCount StringCount	Calculates: the number of occurrences of a specific character string (by respecting the search criteria) in another character string. the number of occurrences of a set of strings in an array.
  Versions 09 and later StringFormat New in version 09 StringFormat StringFormat	Formats a character string according to the selected options.
  Versions 09 and later TypeVar New in version 09 TypeVar TypeVar	Identifies the type of an expression, a variable (during a call to a procedure for example) or a control.
  Versions 09 and later Val New in version 09 Val Val	Returns the numeric value of a character string.
• the use of operators for handling the character strings:
  • the extraction operator ([[]])
  • the comparison operator (<>)
• the use of operators for browsing the character strings:
  • the FOR EACH STRING operator
  • the FOR EACH POSITION operator

• the use of functions for handling the text files:
  

  fWrite	Writes a character string into an external file (ANSI or UNICODE format).
  fWriteLine	Writes a line into a text file (in ANSI or UNICODE format).
  fRead	Reads a block of bytes (characters) in an external file (ANSI or UNICODE).
  fReadLine	Reads a line in an external file (in ANSI or UNICODE format).
  fOpen	Opens an external file (ANSI or Unicode) to handle it by programming.

Implicit conversions

Versions 15 and later
From version 15, the UNICODE character strings are automatically converted when assigned to a HFSQL item of following types: boolean, integer (any size, signed or unsigned), currency, numeric or real.

New in version 15
From version 15, the UNICODE character strings are automatically converted when assigned to a HFSQL item of following types: boolean, integer (any size, signed or unsigned), currency, numeric or real.

From version 15, the UNICODE character strings are automatically converted when assigned to a HFSQL item of following types: boolean, integer (any size, signed or unsigned), currency, numeric or real.