How does the medium in which you are communicating your message influence your writing and editing styles? I think it means medium of writing is what type of writing the person is doing. But I am not sure help please :-) I am a little confused.

3 answers

Yes, you've interpreted this correctly.

Consider these different means of communication:

A note on Twitter or Facebook
An email to your boss
An advertising brochure
A formal essay for a college class
Thank you Ms. Sue
In continuing with the medium question twitter I say I like Paris but email to my boss I like Paris because of the food and scenery. College formal essay I go into depth of why I like Paris. Is that difference?
Right. You might also not capitalize and punctuate your Twitter or Facebook the same way you would a more formal message.