On class completion (ctrl+shift+c?) I'm on method declaration in "implementation".
method decl in "interface" has "default" values of params. and this hotkey changes line in "interface" to same as in "impl" and default values - are lost... :-\
eg
TATMarkers = class
public
procedure Add(APosX, APosY: integer;
const ATag: Int64=0;
ALenX: integer=0;
ALenY: integer=0;
APtr: TObject=nil;
AInsertToBegin: boolean=false);