Boundaries

	wide solid line: an external boundary of the brain
	narrow solid line: an internal boundary readily visible directly or in a projected image of a stained section
	dashed line: an estimated boundary that is either indistinct, highly variable, or arbitrary. An indistinct boundary is a boundary known ordinarily to be identifiable by microscope but not detectable in our material. A variable boundary is distinct in our material, but known to vary from brain to brain. An arbitrary boundary segment completes a boundary that is only partially definable by cyto- or myeloarchitectural features, e.g., a boundary between cortical gyri that is completed by connecting sulcal landmarks.

Shading

	shaded area with boundary: a structure composed predominantly of gray matter (Nissl stained)
	white area with boundary: a structure composed predominantly of white matter (Weil stained)
	shaded or white area without boundary: a distinctive but unnamed (in the atlas) subdivision of a structure
	black area: a cerebral ventricle

Labels

ABC	bold plain text: a primary structure
ABC	nonbold italics: an unsegmented, otherwise unnamed, "remainder" portion of a superstructure some portion of which is shown as one or more independent primary structures
Abc	first letter capitalized: a structure that is predominantly cellular
abc	first letter in lower case: a structure that is predominantly myelinated, or a superficial feature such as a sulcus