Can not be accessed in other methods. These are the parameters received by a function or a subroutine. This is an exception to the rules we've seen so far. Although the array can be expected to have a specific data type, we will not use a third letter to denote that. Another exception to the rule.
Constants can be of different data types.
Things like a RecordSet, Connection, etc. fall into this category. I could add more data types to the above set, but it would just add to the complexity of the code. If you choose a convention, stick to it. Also, try documenting your convention so that other people will have easy time going through your code. Choosing variable names It is sometimes difficult to come up with a name for a variable, especially if you have numerous other variables that indicate the same.