JavaScript. Usage Scope
for Windows and Linux
for OS X
Ctrl+Alt+S

The dialog box opens when you click the Manage Scopes button in the JavaScript. Libraries page.
Use this dialog box to define the scopes where the JavaScript libraries should apply for code completion, highlighting and navigation. The scopes may cover the whole project, directories and even individual files. This helps make JavaScript code completion more precise, and avoid too long suggestion lists.
See Also
Last modified: 12 July 2016