ObjectPascal StuffString Function Replaces a part of one string with another StrUtils unit

function StuffString ( const Source : string; Start, Length : Cardinal; const SubString : string ) : string;

Description The StuffString function inserts a SubString into another string, replacing Length characters at position Start.   If the length is -1, then teh string is simply inserted, and does not replace any characters. Notes Strings are indexed from 1 (arrays from 0). Related commands AnsiReplaceStr Replaces a part of one string with another Copy Create a copy of part of a string or an array Insert Insert a string into another string Move Copy bytes of data from a source to a destination StringReplace Replace one or more substrings found within a string		Example code : A simple example var   source, target : AnsiString; begin   source := '123456789';   target := StuffString(source, 2, 4, '-inserted-');   WriteLn('Source = '+source);   WriteLn('Target = '+target); end; Show full unit code    Source = 123456789    Target = 1-inserted-6789