Hindi Letters – हिंदी पत्र लेखन Premika ki aur se Premi ko Pranay patra “प्रेमिका की ओर से प्रेमी को प्रणय-पत्र” Hindi Letter Writing ...
some people do use it in formal contexts so it depends on who is on the receiving end of your letter/email/message. You may also use "etc." which is commonly used even in formal contexts. However in my opinion, it is as vague as "as so on". An alternative would be to list out...
Write a query letter via email. A query letter is a letter asking an editor if he or she would consider accepting a work of writing for publication consideration. You need to describe the work in question well enough to give the editor a good idea of what it is about. 4 Use email ...