When you write messages, follow these guidelines:
· Avoid vague wording. Give specific names and locations of the objects involved.
· Avoid “please.” It can be interpreted to mean that a required action is optional.
· Do not refer to implementation details that are invisible to the user. For example, do not refer to the names of functions or objects in the program.
· Avoid phrasing that will seem silly to the user, such as “unexpected error.”
· Avoid using placeholder variables in the middle of a message. They are very hard to localize.
The name of the object file conflicts with that of another program in the project. File name: %s
Works did not find a match for this term.
You have named the object file with the name of another program in the project. File name: %s
The term you typed does not appear in this Works file.
Source: Manual of Style for Technical Publications