Select this option if you want letter case to be taken into account when suggesting matches for code completion. Choose whether you want to match case for the first letter of for all letters.
Automatically insert single suggestions
Choose whether you want to automatically complete your code if there's just one code completion suggestion for basic and/or smart completion.
Sort suggestions alphabetically
Choose this option if you want to sort items in the suggestions list in the alphabetical order instead of sorting them by relevance.
You can change this behavior at any time by clicking the or icons in the suggestion list.
Show suggestions as you type
Select this checkbox if you want the suggestions list to be invoked automatically, without having to call completion explicitly.
Insert selected suggestion by pressing space, dot, or other context-dependent keys
Select if you want to insert the selected suggestion by typing certain keys that depend on the language, your context, etc.
Show documentation popup in
Select this checkbox to have CLion automatically show a pop-up for each item in the suggestions list with the documentation for the class, method, or field currently highlighted in the lookup list.
In the field to the right, specify the delay (in milliseconds), after which the pop-up window should appear.
Show parameter name hints on completion
Select this option if you want hints for parameter values to be displayed.
Show the parameter info popup
Select this checkbox to have CLion automatically show a pop-up with all available method signatures when an opening bracket is typed in the editor, or a method is selected from the suggestions list.
In the text field to the right, specify the delay (in milliseconds) after when the pop-up window should appear.
If this checkbox is not selected, use Ctrl+P to show parameter info.
Show full method signatures
If this checkbox is selected, the parameter info displays full signatures, including method name and returned type.