This optional parameter is particularly useful for importing extremely wide raw data with tab-, comma-, or space-delimited formatted files such as Genetic Marker (SNPs) data. The specified number indicates the number of columns in the raw data file to be scanned to determine the attributes of variables (columns) in the SAS data set. The attributes include type (such as numerical, character, and date) and length. The value that you enter in this field must be between 0 and 100000, inclusive.Note: Specifying large values for this parameter can slow down the import process.