Answered Change field chunks

You should use the chunks in the Manager which are stored in the database, only if the database "default" value is not found will it fail back to the file system default chunk. Also, depending on what specifically your trying to do you can create a custom input type which is an alternative to using the chunk and will save time if you plan to have multiple options. The savings comes in by using the custom input type you will not have to modify the snippet call on the forms to change to the chunk with the modified code.

Hope that helps.

Cheers