The E-Links (Engineering Links) toolbox opens in the following situations:

• when you select Engineering Links from the Tool Boxes dialog ( File > Settings > User > Tool Boxes )
• when you select Drawing > Utilities > Utilities > Connect to Browser
• when you select Help > Bentley Communities
• when the Bentley Library icon is selected in the Standard toolbox.

All but the first option listed here also launches your default Web browser.