Q:
>>1: Is there a possibility to activate a warning that remember people before closing Signals that there is an office file open in a desktop office application?
A:
Unfortunately, no.
Q:
>>2: Is there a possibility to insert images directly via shortcut STRG+V in a text block
A:
Not for the moment, but there are plans to consider adding such functionality at some point.
Q:
>>...or as an image?
A:
Yes: Copy image to Copy Buffer (for example, by CTRL+C)Signals -> Notebook -> Experiment -> Add content -> Image -> Upload Image -> CTRL+V
If you mean creating Image section by CTRL+V if there is a picture in the Copy Buffer - there are still some technical difficulties we need to overcome, and this specific task is not a priority now.
Q:
>>3: Is there a possibility to lock/fix the menu of a text block - if you have very long text blocks the menu bar is not visible and you have to scroll all the time up and done - that’s annoying
A:
Perhaps, going to full screen mode could help.
Q:
>>4: Is there a possibility to do easy calculations in a table (table template or table in text block) eg. first row multiplicated with second row
A:
There are no plans to add mentioned functionality in Text table, but there are plans to introduce some Table template calculations.