The easiest way is to use the Status Bar to set your language options. If your status bar already shows the spell check language then you in business. If not, right click the status bar and ensure there is a tick next to the Language option.

To turn off the red underlines for the entire document:
1. Select All by pressing Ctrl-A
2. Click on the language shown in the status bar to open the Language dialog.
3. In that dialog, check the option that says "Do not check spelling or grammar" and click OK.

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Andrew Lockton
Chrysalis Design, Melbourne Australia