--- a/src/layout/ViewConfig.ts	Sun Mar 20 14:10:56 2022 -0700
+++ b/src/layout/ViewConfig.ts	Sun Mar 20 14:12:03 2022 -0700
@@ -12,10 +12,16 @@
   throw new Error("no elems");
 }
 
-export interface TableDesc {
+export interface Link {
+  // If you display a subject u1 with a `pred` edge to u2, then treat u2 as an alias of u1.
+  pred: NamedNode;
+}
+
+interface TableDesc {
   uri: NamedNode;
   primary: NamedNode;
   joins: NamedNode[];
+  links: Link[];
 }
 
 export class ViewConfig {
@@ -54,10 +60,19 @@
         joins.push(joinType as NamedNode);
       }
       joins.sort();
+
+      const links: Link[] = [];
+      for (let linkDesc of this.graph.getObjects(table, EX("link"), null)) {
+        links.push({
+          pred: uriValue(this.graph, linkDesc, EX("predicate")),
+        });
+      }
+
       this.tables.push({
         uri: table as NamedNode,
         primary: tableType,
         joins: joins,
+        links: links,
       });
     }
     this.tables.sort();