• Ctrl+click - add/remove caret.
• Ctrl+drag - add caret with selection.
• Ctrl+Shift+click - add carets column in several lines (from previous caret to clicked line).

• Alt+drag - select column of text. (Note: it may look weird if word-wrap on, because wrap is not considered here at all. Simple rectangle of coordinates [x1,y1]-[x2,y2] is always selected, even if this gives bad looking screen.)
• double-click and immediately drag - select text by words.
• drag-drop of selected text block is supported. If Ctrl is pressed during the drop (you should press Ctrl after drag is started), block will be copied (not moved) to pointed position.

• double-click - select clicked word (see option word_chars).
• triple-click - select entire line (limited by end-of-lines).

• middle-button click (with option mouse_mid_click_paste) - paste from clipboard. This is like in Linux. Additionally it's good to install plugin "Auto-Copy to Clipboard".

• Alt+click (with option mouse_goto_definition) - call "Goto definition" command (if plugin installed).
• Shift+Alt+click - make vertical (column) selection, from first caret to clicked position.
• Shift+ scroll mouse wheel - scroll text horizontally.
• Ctrl+ scroll mouse wheel (on picture preview panel) - zoom picture in/out.