diff --git a/lib/config/builder/list.ts b/lib/config/builder/list.ts
index 7803d66..f8a7788 100644
--- a/lib/config/builder/list.ts
+++ b/lib/config/builder/list.ts
@@ -5,9 +5,8 @@ import {
   InputSpec,
   UniqueBy,
   ValueSpecList,
-  ValueSpecListOf,
 } from "../config-types";
-import { guardAll, typeFromProps } from "../../util";
+import { guardAll } from "../../util";
 
 /**
  * Used as a subtype of Value.list
@@ -116,6 +115,11 @@ export class List<A extends ValueSpecList> extends IBuilder<A> {
       default: Record<string, unknown>[];
       range: string;
       spec: {
+        select: {
+          name: string;
+          description: string | null;
+          warning: string | null;
+        }
         variants: Variants<{
           [key: string]: { name: string; spec: InputSpec };
         }>;
diff --git a/lib/config/config-types.ts b/lib/config/config-types.ts
index 903b305..b9a18ec 100644
--- a/lib/config/config-types.ts
+++ b/lib/config/config-types.ts
@@ -159,17 +159,22 @@ export interface ListValueSpecObject {
 
 export type UniqueBy =
   | null
-  | undefined
   | string
   | { any: readonly UniqueBy[] | UniqueBy[] }
   | { all: readonly UniqueBy[] | UniqueBy[] };
 
 export interface ListValueSpecUnion {
+  select: {
+    name: string
+    description: null | string
+    warning: null | string
+  }
   variants: { [key: string]: { name: string; spec: InputSpec } };
-  /** this may be a handlebars template which can conditionally (on tag.id) make use of each union's entries, or if left blank will display as tag.id*/
+  /** a handlebars template for labeling each union list item */
   displayAs: null | string;
+  /** indicates whether duplicates can be permitted in the list */
   uniqueBy: UniqueBy;
-  /** this should be the variantName which one prefers a user to start with by default when creating a new union instance in a list*/
+  /** the default variant when creating a new union instance in the list*/
   default: null | string;
 }
 
diff --git a/lib/util/propertiesMatcher.ts b/lib/util/propertiesMatcher.ts
index 2c13c02..ab49b8c 100644
--- a/lib/util/propertiesMatcher.ts
+++ b/lib/util/propertiesMatcher.ts
@@ -103,7 +103,6 @@ const matchVariant = object({
 const recordString = dictionary([string, unknown]);
 const matchDefault = object({ default: unknown });
 const matchNullable = object({ nullable: literals(true) });
-const matchPattern = object({ pattern: string });
 const rangeRegex = /(\[|\()(\*|(\d|\.)+),(\*|(\d|\.)+)(\]|\))/;
 const matchRange = object({ range: string });
 const matchIntegral = object({ integral: literals(true) });
diff --git a/scripts/oldSpecToBuilder.ts b/scripts/oldSpecToBuilder.ts
index dd7325e..31a9423 100644
--- a/scripts/oldSpecToBuilder.ts
+++ b/scripts/oldSpecToBuilder.ts
@@ -253,10 +253,21 @@ export default async function makeFileContent(
             name:${JSON.stringify(value.name || null)},
             range:${JSON.stringify(value.range || null)},
             spec: {
+                select: {
+                    "name": ${JSON.stringify(
+                      value?.spec?.tag?.["name"] || null
+                    )},
+                    "description": ${JSON.stringify(
+                      value?.spec?.tag?.["description"] || null
+                    )},
+                    "warning": ${JSON.stringify(
+                      value?.spec?.tag?.["warning"] || null
+                    )},
+                },
                 variants: ${variants},
                 displayAs: ${JSON.stringify(
-          value?.spec?.["display-as"] || null
-        )},
+                  value?.spec?.["display-as"] || null
+                )},
                 uniqueBy: ${JSON.stringify(value?.spec?.["unique-by"] || null)},
                 default: ${JSON.stringify(value?.spec?.default || null)},
             },