I guess the TS was looking for a very simple command like:
S := Something(R:2:2);
But so far as I know, there no such simple function in Pascal that can convert real to string and conform with the default decimal symbol.
Include sysutils, use the typehelpers.
Function ToString(const AFormat: TFloatFormat; const APrecision, ADigits: Integer): string; overload; inline;
Function ToString(const AFormat: TFloatFormat; const APrecision, ADigits: Integer; const AFormatSettings: TFormatSettings): string; overload; inline;
Function ToString(const AFormatSettings: TFormatSettings): string; overload; inline;
Function ToString: string; overload; inline;
Easier that that set is hardly possible in any language!