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JavaScript is needed for this chapter
This chapter is locked, and unlocking and reading it require JavaScript. Please turn JavaScript on, then reload the page.
How to turn JavaScript on
Mozilla Firefox
- Type
about:configin the address bar and press Enter. - Click "Accept the Risk and Continue".
- Find the
javascript.enabledpreference. - Click the toggle to set it to
true.
Google Chrome
- Open the menu, then Settings.
- Click Privacy and security.
- Click Site settings.
- Click JavaScript.
- Select Sites can use JavaScript.
Microsoft Edge
- Open the More menu, then Settings.
- Select Cookies and site permissions.
- Select JavaScript.
- Select Allowed.
Apple Safari
- Go to Safari > Settings (or Preferences).
- Select Security.
- Tick the Enable JavaScript box.
Opera
- Go to Settings.
- Click Advanced in the sidebar, then Privacy and security.
- Click Site settings, then JavaScript.
- Turn on Allowed.
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