The value is 0 if you do not specify decimals when you associate the informat with the variable. NAME variable name. NOBS number of observations in the data set. NPOS physical position of the first character of the variable in the data set. A indicates the data set is alter-protected.
R indicates the data set is read-protected.
W indicates the data set is write-protected. Possible values are . 1 for sorted and validated. Possible values are . A negative value of n indicates that the data set is sorted by the descending order of that variable.