The section for the Aiken format is missing from the import quiz formats help file. The text used to be as follows:
The Aiken format is a very simple way of creating multiple choice questions using a very clear human-readable format. Here is an example of the format:
What is the purpose of first aid?
A. To save life, prevent further injury, preserve good health
B. To provide medical treatment to any injured or wounded person
C. To prevent further injury
D. To aid victims who may be seeking help
More info about the "Aiken" format (link to http://yourmoodle.something.something/help.php?module=quiz&file=import.html)
This link led to the following text:
Importing "Aiken" format files
The Aiken format is a very simple way of creating multiple choice questions using a clear human-readable format. Here is an example of the format:
What is the correct answer to this question?
A. Is it this one?
B. Maybe this answer?
C. Possibly this one?
D. Must be this one!
Which LMS has the most quiz import formats?
The question must be all on one line.
Each answer must start with a single-letter character, followed by a period '.' or a bracket ')', then a space.
The answer line must immediately follow, starting with "ANSWER:" and then giving the appropriate letter.