add ref to template and lnter

src/schema/objects/entities.yaml

@@ -29,11 +29,18 @@ atlas:
   name: atlas
   display_name: Atlas
   description: |
-  The definition of atlas per Merriam-Webster is ‘a bound collection of maps (i.e. labeled brain regions or quantitative aspects) and metadata (tables, or textual matter). 
-
-  Within BIDS atlases are broadly defined as a mapping between locations in a spatial coordinate systems and descriptions associated with those locations. By analogy with geographical atlases, brain atlases can map brain locations to either discrete labels like a map of countries does, or to continuous quantities like a topographic map does.
-
-  This comprises all possible types of atlases, specifically deterministic, probabilistic, and mask/voxel-based ones, and quantitative maps from various modalities including but not limited to: structural features (e.g. myelination, cytoarchitecture), functional features (e.g. resting-state networks, localizers) and such based on multimodal data integration (e.g. gene expression, receptors). Furthermore, it covers both volume/voxel and surface/vertex data, as well as gray and white matter atlases.
+  The definition of atlas per Merriam-Webster is ‘a bound collection of maps (i.e. labeled brain regions
+  or quantitative aspects) and metadata (tables, or textual matter). Within BIDS, atlases are broadly 
+  defined as a mapping between locations in a spatial coordinate systems and descriptions associated with
+  those locations. Atlases are often build from registering many subjects or maps to a template. By analogy
+  with geographical atlases, brain atlases can map brain locations to either discrete labels like a map 
+  of countries does, or to continuous quantities like a topographic map does. 
+
+  This comprises all possible types of atlases, specifically deterministic, probabilistic, and mask/voxel-based
+  ones, and quantitative maps from various modalities including but not limited to structural features (e.g. 
+  myelination, cytoarchitecture), functional features (e.g. resting-state networks, localizers) and such based on 
+  multimodal data integration (e.g. gene expression, receptors). Furthermore, it covers both volume/voxel and 
+  surface/vertex data, as well as gray and white matter atlases.
 ceagent:
   name: ce
   display_name: Contrast Enhancing Agent