The Graphical Script Editor Settings for the Interface Display the Graphical Script Editor Zoom...
 
Zoom...
You can enlarge or reduce the area displayed in the script window. To do this, you have the choice of using pre-defined percent values or of using a value that you define.
This is how you change the size of the display in the script window
1 Select “View | Zoom…” from the menu.
2 Select the zoom or reduction factor from the pre-defined percent values or enter a whole number between 10 and 500.
 
3 Click on “OK”.
Or
1 Go to the toolbar and click on the drop-down list.
2 Select the zoom or reduction factor from the pre-defined percent values.
3 Click on “OK”.
The zoom or reduction will be immediately visible.