This is documentation about a configuration directive, which can be placed within Movable Type’s core configuration file,
mt-config.cgi, to customize the behavior of the system.
By default Movable Type forces all userpics to be square by centering and then cropped the longest edge. It then scales the userpic to the configured size. Users wishing to preserve the aspect ratio of uploaded userpics would set this configuration directive to one (1). When set to one, Movable Type will simply scale the uploaded userpic to the configured size.