Sentence:  [p 253] excellent Q2's ‘extent' is generally dismissed as an error, probably a mis-reading of ‘exlent', a common <WSD>spelling</WSD> at this time. / [p 269] "reverend" The <WSD>spellings</WSD> ‘reuerent' (Q2) and ‘Reuerend' (F) were interchangeable at this time. / [p 466] Guildensterne and Rosincrance are F's consistent <WSD>spellings</WSD>. 
Meaning of the word marked with <WSD> tags:  A specific spelling of a word.