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src/registrar/assets/sass/_theme/_admin.scss

@@ -617,3 +617,11 @@ address.dja-address-contact-list {
 .usa-button__small-text {
     font-size: small;
 }
+
+p.django-admin__model-description{
+    color: var(--primary);
+    display: -webkit-box;
+    -webkit-line-clamp: 3;
+    -webkit-box-orient: vertical;  
+    overflow: hidden;
+}

src/registrar/templates/admin/change_list.html

@@ -2,6 +2,28 @@
 
 {% block content_title %}
     <h1>{{ title }}</h1>
+
+    {# Adds a model description #}
+    {# TODO - this should be stored in context or something, not here. Make this a function. #}
+    {% if opts.model_name == 'domainrequest' %}
+        <p class="django-admin__model-description text-normal">
+            This table contains all domain requests that have been started within the registrar and the status of those requests. 
+            Updating values here will immediately update the corresponding values that users see in the registrar. 
+            Once a domain request has been adjudicated, the details of that request should not be modified. 
+            To update attributes (like an organization’s name) after a domain’s approval, go to <a href="#">Domains</a>. 
+            Similar fields display on each Domain page, but edits made there will not affect the corresponding domain request.
+        </p>
+    {% elif opts.model_name == 'contact' %}
+        <p class="django-admin__model-description text-normal">
+            Contacts include anyone who has access to the registrar (known as “users”) and anyone listed in a domain request, 
+            including other employees and authorizing officials. 
+            Only contacts who have access to the registrar will have a corresponding record within the <a href="#">Users</a> table.
+            <br>
+            Updating someone’s contact information here will not affect that person’s Login.gov information.
+        </p>
+    {% elif opts.model_name == 'domaininformation' %}
+    {% endif %}
+
     <h2>
         {{ cl.result_count }} 
         {% if cl.get_ordering_field_columns %}