In an Askia sample list, each field has an assigned data type, which determines the data that the field can store. These are determined by AskiaLister (and can be over-ridden by the user) at the time the list file is created. If you add a new field to your list file, you can decide the data type.
The available field types are as follows:
Long - numerical information; whole numbers only (e.g. 1234)
Double - numerical information; decimal numbers (e.g. 1234.56)
Boolean - information that indicates true or false (e.g. yes/no data)
Text - for text information up to 255 characters
Memo - for longer text information (up to 65,535 characters)
Date - for date and/or time information