Normally, TinyMCE cannot be natively loaded lazily; you must have the 'tiny_mce.js' script
rendered directly to your page instead of through an Ajax loaded component.
Date variables:
%y year as a decimal number without a century (range 00 to 99)
%Y year as a decimal number including the century
%d day of the month as a decimal number (range 01 to 31)
%m month as a decimal number (range 01 to 12)
%D same as %m/%d/%y
%% a literal "%" character
This option can only be used when theme is set to advanced and when the
theme_advanced_layout_manager option is set to the default value of "SimpleLayout".