Ссылка. Today I learned… :) I didn’t know about this syntax for properties…

http://www.delphifeeds.com/go/f/115017

Цитата:

 ...
 FStrings: array [0..1] of string;
 ...
 property String0: string read FStrings[0] write FStrings[0];
 property String1: string read FStrings[1] write FStrings[1];