1. A method for assessing textual widgets, comprising: entering a string expression into a document; invoking a spell-checker to check a spelling of the string expression; marking the string expression as misspelled; identifying a textual widget based on the misspelling of the string expression; evaluating the misspelled string expression using the identified textual widget, the identified textual widget returning at least one result of the evaluation; displaying the at least one result of the evaluation; selecting a result of the evaluation; and replacing the string expression in the document with the selected result of the evaluation.