Although you can use this website, please bear in mind that it is unfinished. Note that only categorical variables have a link to a description of its values. If a variable starts with "fl," it means the variable is a flag variable that is a binary, either Yes or No. A variable starting with "dt" indicates the variable is a date, and a variable starting with “ts” indicates the variable is a timestamp. Lastly, even though a table exists, it does not necessarily mean it contains data.