@james how to write in English. Technical documents, Slack messages about something being broken, emails, meeting agendas. Being able to clearly communicate what you intend to do, or what you have done and need help with, is a skill that too few developers seem to focus on developing.
@jon do you mean "how to write in a way that can be understood by anyone, not just technical people"? cos obviously, not everyone is writing English.
@james fair point. I (somewhat ironically) meant being able to write prose which clearly communicates a message clearly, in whatever language your team communicates in.