FET printing dialog Teaser vs. Preview

[uni_instructor]

Dear Liviu,

the timetable printing dialog offer two buttons: Preview / Teaser
I am wondering what the difference between both buttons/functions is?
(see attached figure below)
Both buttons seem to produce the same window.

Best regards

UI

[Liviu Lalescu]

Dear UI,

It is @Volker Dirr who designed this. However, I think that Teaser shows only the first 1 or 2 pages and Preview all the pages. Teaser is much faster for large documents.