Sentence:  <WSD>"Reverse spelling</WSD>" is one example of the ability to reverse a sequential order that is difficult for persons with aphasia (language impairment) or other organic mental disorders (Bender, 1975). <WSD>Reverse spelling</WSD> has been incorporated into some screening measures for cognitive impairment (e.g. the Mini-Mental State Examination and the Modified Mini-Mental State Examination, see chap. 3) and examined, in its own right, in relation to age. 
Meaning of the word marked with <WSD> tags:  The spelling or writing of a word in reverse or from back to front.