# Zoom Dynamic

[Zoom Dynamic] command executes scaling of the view by the Mouse drag with the left button pressed down.

The command will be terminated with one drag action, that is, when the mouse button is released after pressed. When the left button is pressed after the command start, mouse cursor is changed to When the mouse is moved vertically with the button down, scaling is adapted to the screen view.

Without invoking this command, the following operation executes the same scaling.

- Mouse Wheel rotation. With `Ctrl` key pressed down, ration of the scaling is accelerated.
- Mouse drag of the right button with `Ctrl` key presed down.
- `+` or `-` key of 10 key pressed down. With `Ctrl` key pressed down, ration of the scaling is accelerated.