Chad Vernon has a tutorial on this topic: http://www.chadvernon.com/blog/resources/maya-api-programming/mrampattribute/
An AE template is somrthing you create which is used in combination with your custom node for defining how the attribute editor should display your nodes attributes. The command you refer to is used in this template for your note to represent your attibute as the ramp. The docs also mention that the command is for AE templates. -- view archives: http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe
