Shape node

Allows you to trim lines (stems, branches, leaves etc.) directly in the viewports.

Turns on the shape modify mode. You can add and move the control points. To exit this mode, right-click the active viewport or click this button again.

Turns on the deleting control points mode. You can delete the added points or reset positions for edge points. To exit this mode, right-click the active viewport or click this button again.

Reset Modification

Removes all modifications of this modifier.

Examples:

Add the new control point:

Move the control point: