Currently, only a few of the mistkaes are shown in the "Not In Dictionary" box. Once a word is changed or ignored, new ones are added. When the number increases, words from the beginning are removed.
This property/method should let the spell control show all the text at once.

Our Client requirement is to hide the X Close button on RadSpell Dialog. 

Added below code to hide from CSS which works fine:

 .RadWindow_Default .rwControlButtons A
        {
            display: none !important;
        }   
.RadWindow .rwControlButtons A
        {
            display: none !important;
        }   

Now the requirement is when CSS is disabled, user should not see the Close link.

"There is a 'Close' link that appears when CSS is disabled within the dialog. This link does not appear on the page with CSS enabled. Please find the attachment.

Is there any way we can hide/disable this X Close link/button from JavaScript or CodeBehind.

Thanks

The default focus in the dialog should provide a meaningful action if enter is pressed. The Ignore button would be one such. If you feel like another button/element should have the default focus, share your comments. You can find attached a sample that provides tabIndexes and default focus. This improvement is related to http://feedback.telerik.com/Project/108/Feedback/Details/126937