UltimateEditor contains a built-in spell checker provided by UltimateSpell.

You can spell check the editor content in two ways:

• Spell check dialog box:  
• Spell check as you type:

You can set the SelectedValue property of the SpellAsYouType toolbar item to True in your editor XML file to
initially enable the SpellAsYouType feature as follows:

<ToolbarItem Type="Button" ID="SpellAsYouType" Command="SpellAsYouType"
ButtonFile="SpellAsYouType.gif" Selected="True" />

You can right-click the misspelled words, and select a suggestion from the popup menu. You can update the style
of the popup menu in UltimateSpell.ayt.css under the UltimateSpellInclude directory. You can even update the
underline image for spelling errors by replacing the SpellError.gif file with your own.