Indeed, I thought it was part of the operating system,
but I see that there are 3 types of display for the SAVE and SAVE AS
1- Using 70% of applications OS2. With SAVE and CANCEL options
2- The applications using GSview, Picture viewer, with SAVE, CANCEL, HELP
3- The applications using QupZilla like OpenOffice offering more options FOLDER CREATE, SAVE, CANCEL ...
I understand that if it is not part of the operating system,
will be part of the compilers, because having just three types.
In my case they are widely used the Lucide (now abandoned because they can not print to the new printer),
GSview (now is ok), and Thunderbird, to view pdf files and move.
Saludos