To open the editor settings, navigate to File | Settings. In the IDE Settings section of the left panel, select Editor. This displays the general settings of the editor in the right panel. We recommend checking two of the options that are unchecked by default:
Change font size (Zoom) with Ctrl+Mouse Wheel: Checking this option allows us to change the font size of the editor using the mouse wheel, as we do in other programs such as web browsers.
Show quick doc on mouse move: Checking this option enables the display of a brief document about the code in a small dialog when we move the mouse over a piece of code and wait for 500 milliseconds. When we move the mouse again, the dialog automatically disappears, but if we move the mouse into the dialog, then we can examine the document in detail. This is very useful to read what a method does and to identify its parameters without navigating to it. The following screenshot displays this functionality:
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