Shortcut for Variable Info/Mouse Hover

[Julius]

Is there a possibility to set a shortcut for the info-window when you hover over a variable with the mouse?
I want things like the variable type to show up by not using the mouse.

[aha_1980]

@Julius: Indeed that works by pressing the Alt key when the cursor is in a variable and Edit > Preferences > Text Editor > Behavior > Mouse and Keyboard > Show help tooltips using keyboard shortcut (Alt) is checked.

Regards