It's 7Zip 4.65 on Win764 outputting to standard "zip" not to "7z". But my question is a general question: Why is it different to zip certain stuff vs. to zip same stuff put in a single folder as the top directory level. Why does ANY zipping software behave differently in the two different situations?
When I take let's say 20 .docs and mark and zip them, system begins to search around and to run for a longer time. However, same 20 .docs simply put into a folder first and then zipped as that folder, it runs through very fastly and easily.