Oracle Forms

I have a text box with multi line true. I want to provide MS Word like formatting options (bold, italic, underline, increase font etc.) and spell/grammar check but i cant apply changes to selected text. Whatever i do, changes the whole string of the column. I could not accomodate a spell check either. Is it possible in Oracle Forms to edit only the selected text instead of the complete column text and
provide a spell & grammar check facility? It would be a great help if anybody could tell me how!