%
% stack:
%
_Cton.AltText any?
{
%
% there is alt text for this button, add to lookup
%
% stack: alt-text
%
 _Cton.Alt _Cton.Object <?>
 {
%
% stack: alt-text alt-lookup
%
  second quoter &" !Cton.AltText" &;
  &
  !Cton.Alt
 } if
%
% stack: alt-text
%
 pop
} if
%
% stack: 
%