Preferences window

Check open previous file at start-up if you want to start with the last file opened.

Set Zoom wheel behavior according to how you want the mouse wheel to work in the Center pane. Hold down the Ctrl key while moving the mouse wheel to switch between zoom and scroll. Hold down the Alt key while moving the mouse wheel to switch between up/down and left/right scroll.

Set supported date formats to the date formats you wish to recognize.