robertmo,
I'm always using right-button selection mode (default mode, may be changed in configuration) since DOS managers like Norton Commander. And in this mode it is necessary to hold Shift before dragging. Left-button selection mode have much less features, e.g. you can't select/deselect files by just clicking mouse button or by moving mouse above files while holding its button, also it resets when you click onto some file.
F7 - new folder/file
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