A character string (or string for short) is a sequence of zero or more characters (byte sized), enclosed in single quotes, and on 1 line of the program source. A character set with nothing between the quotes (’’) is an empty string.
_________________________________________________________________________________________________________Character strings
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The string consists of standard, 8-bit ASCII characters. The control string can be used to specify characters which cannot be typed on a keyboard, such as #27 for the escape character.
The single quote character can be embedded in the string by typing it twice. The C construct of escaping characters in the string (using a backslash) is not supported in Pascal.
It is possible to use other character sets in strings: in that case the codepage of the source file must be specified with the {$CODEPAGE XXX} directive or with the -Fc command line option for the compiler. In that case the characters in a string will be interpreted as characters from the specified codepage.