Original sentence: A common epistolary formula used in these model letters is 'The official A.However, these models were rarely featured in educational manuscripts, instead fictional letters found in numerous manuscripts were used.Papyrus was the chief material for writing long-distance letters.This papyrus was rolled up and sealed with a mud stamp, while ostraca were frequently used to write shorter, non-confidential letters sent to recipients located nearby
Edited sentence: However, these models were rarely featured in educational manuscripts; instead fictional letters found in numerous manuscripts were used.Papyrus rolls sealed with mud stamps were used for long-distance letters, while ostraca were frequently used to write shorter, non-confidential letters sent to recipients located nearby.The common epistolary formula used in these model letters was 'The official A