Trims leading and trailing spaces and control characters from a string.
function Trim(const S: string): string; overload;
AnsiString Trim(const AnsiString S);
Trim removes leading and trailing spaces and control characters from the given string S.
In the 7-bit ASCII character set defined in ANSI X3.4-1977 (C0 and G0), "control codes" are defined as all characters whose code is between 0 and 31.
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