Add exemplar tags

library_schemas/slam/prerelease/hedtsv/HED_slam_1.0.0/HED_slam_1.0.0_Prefixes.tsv

@@ -7,4 +7,5 @@ owl:	http://www.w3.org/2002/07/owl#	The OWL namespace [OWL2-OVERVIEW]
 prov:	http://www.w3.org/ns/prov#	The PROV namespace [PROV-DM]
 dc:	http://purl.org/dc/elements/1.1/	The Dublin Core elements
 terms:	http://purl.org/dc/terms/	The Dublin Core terms
-foaf:	http://xmlns.com/foaf/0.1/	Friend-of-a-Friend http://xmlns.com/foaf/spec/
+foaf:	http://xmlns.com/foaf/0.1/	Friend-of-a-Friend http://xmlns.com/foaf/spec/
+has_dbxref	http://www.geneontology.org/formats/oboInOwl#dbxref	Relates an entity to an external database entry

library_schemas/slam/prerelease/hedtsv/HED_slam_1.0.0/HED_slam_1.0.0_Tag.tsv

@@ -1,2 +1,13 @@
 hedId	rdfs:label	Level	omn:SubClassOf	Attributes	dc:description	omn:EquivalentTo	Annotations
-	Anatomical-landmark	0	Anatomical-item	rooted=Anatomical-item	A collection of specific points on the human body used for anatomical and sensor placement reference.		dc:source "Original", rdfs:comment "Body landmarks are used to standardize sensor placement."
+	Anatomical-landmark	0	Anatomical-item	rooted=Anatomical-item	A collection of specific points on the human body used for anatomical and sensor placement reference.		dc:source "Original", rdfs:comment "Body landmarks are used to standardize sensor placement.
+	Head-landmark	1	Anatomical-landmarks		Points on the head used as reference landmarks.		dc:source "Original"
+	Nasion	2	Head-landmark		The midpoint between the eyes just above the bridge of the nose.		
+	Inion	2	Head-landmark		The most prominent point of the occipital bone at the back of the head.		
+	Left Helix-Tragus Junction (LHJ)	2	Head-landmark		The point where the helix meets the tragus of the left ear.		
+	Right Helix-Tragus Junction (RHJ)	2	Head-landmark		The point where the helix meets the tragus of the right ear.		
+	Vertex	2	Head-landmark		The highest point on the head in the midline.		
+	Mastoid-process	2	Head-landmark				dc:source "Original"
+	Torso-chest-landmark	1	Anatomical-landmarks		Points on the chest used as reference landmarks.		dc:source "Original"
+	Acromion-process	2	Torso-chest-landmark		The outermost point of the shoulder blade.		has_dbxref: "NCIT:C32048" "FMA:12525" "UBERON:0002497"
+	Vertebra-prominens (C7)	2	Torso-chest-landmark		The seventh cervical vertebra at the base of the neck.		has_dbxref: "NCIT:C32245" "FMA:23260" "UBERON:0004616"
+	Xiphoid-process	2	Torso-chest-landmark		The small cartilaginous process at the lower end of the sternum.		has_dbxref: "NCIT:C33895" "FMA:7488" "UBERON:0002207"