A layer will expand to contain all of its content by default. A comma separated list of integer values representing the absolute pixel coordinates of the rectangle. Origin values are at the top, left corner and grow as one moves down or to the right. If no parent layer exists, the value is relative to the main document window. Integer values specifying screen position or an HTML scripting expression to position one layer relative to another.
Layers are unnamed by default.
An alphanumeric string. Must begin with an alphabetic character. Integer values specifying screen position or an HTML scripting expression. Integer values specifying screen position or an HTML scripting expression. This specifies the coordinate position of the top boundary position of the current layer in relation to a parent layer if present.