Queries the manner in which a variable of type list was created.
function ListGetType ( f  : list ) return_val  : string
Variable of type list as created by the addfiles function.
Returns a variable of length 2 and of type string.
The first element specifies "join" or "cat". The second element specifies "fifo" (first-in/first-out, the default) or "lifo" (last-in/first-out) which describes manner in which the files are accessed.
Let "fils" be a one-dimensional array of strings containing the full or relative path of the data files to be referenced. The file(s) pointed to by the file_path string must be a supported file format.
f = addfiles (fils, "r") ListSetType (f, "cat") ; concatenate (=default) . . . strList = ListGetType (f) print(strList)The print procedure yields:
Variable: strList Type: string Total Size: 16 bytes 2 values Number of Dimensions: 1 Dimensions and sizes:  Coordinates: (0) cat (1) fifo