For accessibility and usability reasons most links should not open a new browser window.
Only under the following circumstances should you set a target on a link to open in a new window:
- If opening a link in the same window will disrupt the flow of a form or other process.
- If opening a link will log you out of a system.
If a link does open a new window you must inform the user by adding the new window icon 
.
Opening a link in a new window
Assuming you are in edit mode:
- Change the Text Format to Full HTML on the content field where you need to create a link that opens in a new window. The Text Format is located below the content region on the left.
- Click the Source button on the formatting toolbar to switch into HTML mode.
- Copy the following html code and paste it where you would like the new window icon to appear (following the text that will become a link)
<img style="display:inline;" src="https://it.umn.edu/sites/itumn.umn.edu/files/styles/folwell_full/public/images/up-right-from-square-solid-sm-copy.png?itok=-WBFROFe" alt="Opens new window." width="20" height="20"> - Click the Source button on the formatting tool bar again to switch back into regular editing mode.
- Select the link text and the new window icon.
- Click the Link button
in the formatting toolbar. - Enter the fully qualified URL (refer to Creating External Links in Drupal).
- Click Advance to expand the drop-down menu.
- Select Open in a new window.
- Click the green check-mark to Save.