For instance, a train sign might say
South bound trains this platform rather than
Use this platform to take a Southbound train.
There is an interesting lack of articles and sometimes verbs, is there a name for this style (or a reason for it)?
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It only takes a minute to sign up.Sign up to join this community
Telegram style, telegraph style, telegraphic style or telegraphese describes a clipped way of writing that attempts to abbreviate words and pack as much information into the smallest possible number of words and/or characters.
It originated in the telegraph age when telecommunication consisted only of short messages transmitted by hand over the telegraph wire. The telegraph companies charged for their service by the number of words in a message, with a maximum of 15 characters per word for a plain-language telegram, and 10 per word for one written in code. The style developed to minimize costs but still convey the message clearly and unambiguously.
Of the four names mentioned, telegraphic style is the version that I'm familiar with.
In software development this concept is called terseness or Verbose vs Terse. https://wikidiff.com/verbose/terse