+Byte sizes are presented in a human readable format using a set of prefixes
+whose type can be specified via the "prefix_type" option. Three sets of
+prefixes are available:
+
+binary::
+IEC prefixes (Ki, Mi, Gi, Ti) represent multiples of powers of 1024.
+This is the default.
+decimal::
+SI prefixes (k, M, G, T) represent multiples of powers of 1000.
+custom::
+The custom prefixes (K, M, G, T) represent multiples of powers of 1024.
+