Use this toSet caret to small size
Before invokingA document must be open to use this option.
Menu pathView > Editor > Caret > Small Caret
Command nameMViewCaretSizeDefault
Accelerator keyS (from the main menu: Alt+V > E > C > S)
Options on parent menu (Caret+)Show Caret, Small Caret, Large Caret, Extra Large Caret, Default Color, Green Caret, Blue Caret, Red Caret