For big projects would be convenient to store own header template into lazarus directory. When user choose 'create new pascal unit/form/component' then Lazarus IDE creates it with predefined header template + usual code.
{
Company: My company name
Author: Some author
Creation date: 2013-11-02
GNU license text.....
}
unit Unit1;
interface
uses
Classes, SysUtils;
implementation
end.