Punctuation

Exclamation points

Avoid using exclamation points unless necessary. Do not intimidate or reprimand the user.
Bad
  • No results found!
Good
  • No results found.

Hyphens

Use hyphens for two or more words when they come before a noun they modify and act as a single idea. Often a space is left where a hyphen would go.
Bad
  • Pre Renewal
  • Please only initiate customer requested cancellations
  • Policy not-taken
Good
  • Please initiate only customer-requested cancellations.
  • Policy not taken

Periods (full stops)

Use a period (full stop) at the end of a complete sentence. Complete sentences may occur as list items, field validation messages, system messages, notification messages, and so on. Fragments and headings do not require periods.
Bad
  • Enter a valid phone number
  • This quote has been withdrawn
  • Error retrieving information, Please contact your administrator
Good
  • Enter a valid phone number.
  • This quote has been withdrawn.
  • There was an error while retrieving information. Please contact your administrator.