Hi Andrey,
thanks for answering my request. I've tried the snippets and they will work too, but I think that this feature is a little bit like sooting a rabbit with a rocket .... For "bigger" snippets it is really great!
It's more that you've typed one or some few formulars which are used very often, so it would be nice just to drag them into an "library-area" (which could be placed below the Greek symbols on the right side of the screen) where they are shown as a thumbnail. And every time you need them again, you could easily drag them from there onto the current worksheet.
The big advantage is that you easily see what's in the box for using and it is much faster than inserting a snippet. Even it would be very easy to change / extend the single entries (just drag it onto the actual sheet, remove it (maybe a right mouse-click-menu on the library, or just select and press DEL-key, edit it and put it back to the library).
So, what do you think about it?