We've received a few queries about spellchecking in Web Author. We are using the default spellchecking functionality provided by the user's browser. In most browsers this means incorrectly spelled words are underlined with a red squiggly line. In text fields, you can right-click and suggested corrections are provided. In description fields, right-clicking shows a context menu for the editor, rather than the browser's menu, so no suggestions are provided. However you can force the browser's menu to appear by pressing the CTRL button at the same time as right-clicking.
If you seeing red squiggly lines for seemingly correctly spelled words, the chances are your browser's locale is not set to your preferred language. Often the locale is set to English(US) where you may want it to be set to English(UK).
We also have an item on our To Do list to add support for spellchecking the whole model. Let us know if this is important to you, so we can prioritise it.