The present invention relates to cleaning compositions comprising variants of an alpha-amylase and methods of treating surfaces such as textiles with aqueous liquor comprising such compositions, especially at low temperatures. The statistics are transferred by direct memory access from the network interface to a memory accessed by at least one processor. Among other applications, these polymers can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, and pitch and stickies control agents.