The transform line gives the geometric transform from coor- dinates of the child filename into coordinates of the cell being read. The third kind of line group in a .mag file is a list of labels. Here layer is the name of one of the layers specified in the technology file for this cell. The label is attached to material of this type. Layer may be space , in which case the label is not considered to be attached to any layer.
Labels are rectangular.
The width of the rectangle or its height may be zero. In fact, most labels in Magic have a lower-left equal to their upper right. The text of the label, text , may be any sequence of charac- ters not including a newline. This text is located at one of nine possible orientations relative to the center of the label's rectangle. Everything following this line is ignored.