In ESM, you can use Magnifying glass to zoom into a region.
TIP:
To enable/disable magnifying glass in ESM, use the "Local zooming using a magnifying glass" button on the toolbar.
You can increase or decrease the magnification factor with the following key combinations:
To increase or decrease the size of magnification glass cursor:
To increase: Ctrl key + Backward scrolling of the Mouse wheel
To decrease: Ctrl key + Forward scrolling of the Mouse wheel
To increase or decrease the zooming of the nodes:
To Zoom in: Forward movement of the Mouse wheel
To Zoom out: Backward movement of the Mouse wheel
NOTE: Magnification glass is available only in the Graphical View of ESM window.