diff --git a/src/composer.lock b/src/composer.lock
index 40870d5..d929ee6 100644
--- a/src/composer.lock
+++ b/src/composer.lock
@@ -12,7 +12,7 @@
             "source": {
                 "type": "git",
                 "url": "https://git.bitbadger.solutions/bit-badger/pdo-document",
-                "reference": "afc5d8009507a297c8169be93aee1085e652eedc"
+                "reference": "bcca9f5ace2ba32c24412e284ff4789480d9619d"
             },
             "require": {
                 "ext-pdo": "*",
@@ -35,7 +35,7 @@
                     "Test\\Integration\\": "./tests/integration"
                 }
             },
-            "time": "2024-06-04T12:10:57+00:00"
+            "time": "2024-06-05T02:36:58+00:00"
         },
         {
             "name": "netresearch/jsonmapper",
diff --git a/src/lib/Data.php b/src/lib/Data.php
index 83599e0..435c1e8 100644
--- a/src/lib/Data.php
+++ b/src/lib/Data.php
@@ -83,12 +83,13 @@ class Data
     /**
      * Create a JSON field comparison to find bookmarked items
      *
+     * @param bool $value The flag to set (optional; defaults to true)
      * @param string $qualifier The table qualifier to include (optional; defaults to no qualifier)
      * @return Field A field that will find bookmarked items
      */
-    public static function bookmarkField(string $qualifier = ''): Field
+    public static function bookmarkField(bool $value = true, string $qualifier = ''): Field
     {
-        $bookField = Field::EQ('is_bookmarked', 1, '@book');
+        $bookField = Field::EQ('is_bookmarked', ($value ? 1 : 0), ':book');
         $bookField->qualifier = $qualifier;
         return $bookField;
     }
@@ -102,7 +103,7 @@ class Data
      */
     public static function feedField(int $feedId, string $qualifier = ''): Field
     {
-        $feedField = Field::EQ(Configuration::$idField, $feedId, '@feed');
+        $feedField = Field::EQ(Configuration::$idField, $feedId, ':feed');
         $feedField->qualifier = $qualifier;
         return $feedField;
     }
@@ -115,7 +116,7 @@ class Data
      */
     public static function unreadField(string $qualifier = ''): Field
     {
-        $readField = Field::EQ('is_read', 0, '@read');
+        $readField = Field::EQ('is_read', 0, ':read');
         $readField->qualifier = $qualifier;
         return $readField;
     }
@@ -128,7 +129,7 @@ class Data
      */
     public static function userIdField(string $qualifier = ''): Field
     {
-        $userField = Field::EQ('user_id', $_SESSION[Key::USER_ID], '@user');
+        $userField = Field::EQ('user_id', $_SESSION[Key::USER_ID], ':user');
         $userField->qualifier = $qualifier;
         return $userField;
     }
diff --git a/src/lib/Feed.php b/src/lib/Feed.php
index ea6d887..ea2aa83 100644
--- a/src/lib/Feed.php
+++ b/src/lib/Feed.php
@@ -116,25 +116,25 @@ class Feed
             return ['error' => 'Unrecognized purge type ' . PURGE_TYPE];
         }
 
-        $fields = [Field::EQ('feed_id', $feedId, '@feed'), Field::EQ('is_bookmarked', 0, '@book')];
+        $fields = [Field::EQ('feed_id', $feedId, ':feed'), Data::bookmarkField(false)];
         $sql    = Query\Delete::byFields(Table::ITEM, $fields);
         if (PURGE_TYPE == self::PURGE_READ) {
-            $readField = Field::EQ('is_read', 1, '@read');
+            $readField = Field::EQ('is_read', 1, ':read');
             $fields[]  = $readField;
             $sql      .= ' AND ' . Query::whereByFields([$readField]);
         } elseif (PURGE_TYPE == self::PURGE_BY_DAYS) {
-            $fields[] = Field::EQ('', Data::formatDate('-' . PURGE_NUMBER . ' day'), '@oldest');
-            $sql     .= " AND date(coalesce(data->>'updated_on', data->>'published_on)) < date(@oldest)";
+            $fields[] = Field::EQ('', Data::formatDate('-' . PURGE_NUMBER . ' day'), ':oldest');
+            $sql     .= " AND date(coalesce(data->>'updated_on', data->>'published_on)) < date(:oldest)";
         } elseif (PURGE_TYPE == self::PURGE_BY_COUNT) {
-            $fields[] = Field::EQ('', PURGE_NUMBER, '@keep');
+            $fields[] = Field::EQ('', PURGE_NUMBER, ':keep');
             $id       = Configuration::$idField;
             $table    = Table::ITEM;
             $sql     .= ' ' . <<<SQL
                 AND data->>'$id' IN (
                     SELECT data->>'$id' FROM $table
-                     WHERE data->>'feed_id' = @feed
+                     WHERE data->>'feed_id' = :feed
                      ORDER BY date(coalesce(data->>'updated_on', data->>'published_on')) DESC
-                     LIMIT -1 OFFSET @keep
+                     LIMIT -1 OFFSET :keep
                 )
                 SQL;
         }
@@ -204,7 +204,7 @@ class Feed
 
             Document::insert(Table::FEED, self::fromParsed($feed), $pdo);
 
-            $doc = Find::firstByFields(Table::FEED, $fields, self::class);
+            $doc = Find::firstByFields(Table::FEED, $fields, static::class);
             if (!$doc) return ['error' => 'Could not retrieve inserted feed'];
 
             $result = self::updateItems($doc->id, $feed, date_create_immutable(WWW_EPOCH), $pdo);
diff --git a/src/lib/ItemList.php b/src/lib/ItemList.php
index 116c9fb..63b226b 100644
--- a/src/lib/ItemList.php
+++ b/src/lib/ItemList.php
@@ -58,7 +58,7 @@ class ItemList
         try {
             $this->dbList = Custom::list(
                 ItemWithFeed::SELECT_WITH_FEED . ' WHERE '
-                    . Query::whereByFields(array_filter($allFields, fn($it) => $it->paramName <> '@search'))
+                    . Query::whereByFields(array_filter($allFields, fn($it) => $it->paramName <> ':search'))
                 . $searchWhere,
                 Parameters::addFields($allFields, []), new DocumentMapper(ItemWithFeed::class));
         } catch (DocumentException $ex) {
@@ -73,7 +73,7 @@ class ItemList
      */
     public static function allBookmarked(): static
     {
-        $list = new static('Bookmarked', '/?bookmarked', [Data::bookmarkField(Table::ITEM)]);
+        $list = new static('Bookmarked', '/?bookmarked', [Data::bookmarkField(qualifier: Table::ITEM)]);
         $list->linkFeed = true;
         return $list;
     }
@@ -124,7 +124,7 @@ class ItemList
     public static function bookmarkedForFeed(int $feedId): static
     {
         return new static('Bookmarked', "/feed/items?id=$feedId&bookmarked",
-            [Data::feedField($feedId, Table::FEED), Data::bookmarkField(Table::ITEM)]);
+            [Data::feedField($feedId, Table::FEED), Data::bookmarkField(qualifier: Table::ITEM)]);
     }
 
     /**
@@ -136,12 +136,12 @@ class ItemList
      */
     public static function matchingSearch(string $search, bool $isBookmarked): static
     {
-        $fields = [Field::EQ('content', $search, '@search')];
-        if ($isBookmarked) $fields[] = Data::bookmarkField(Table::ITEM);
+        $fields = [Field::EQ('content', $search, ':search')];
+        if ($isBookmarked) $fields[] = Data::bookmarkField(qualifier: Table::ITEM);
         $list = new static('Matching' . ($isBookmarked ? ' Bookmarked' : ''),
             "/search?search=$search&items=" . ($isBookmarked ? 'bookmarked' : 'all'), $fields,
             ' AND ' . Table::ITEM . ".data->>'" . Configuration::$idField . "' IN "
-                . '(SELECT ROWID FROM item_search WHERE content MATCH @search)');
+                . '(SELECT ROWID FROM item_search WHERE content MATCH :search)');
         $list->showIndicators = true;
         $list->displayFeed    = true;
         return $list;
diff --git a/src/lib/ItemWithFeed.php b/src/lib/ItemWithFeed.php
index 362b860..3447225 100644
--- a/src/lib/ItemWithFeed.php
+++ b/src/lib/ItemWithFeed.php
@@ -36,9 +36,9 @@ class ItemWithFeed extends Item
      */
     private static function idAndUserFields(int $id): array
     {
-        $idField = Field::EQ(Configuration::$idField, $id, '@id');
+        $idField = Field::EQ(Configuration::$idField, $id, ':id');
         $idField->qualifier = Table::ITEM;
-        $userField = Field::EQ('user_id', $_SESSION[Key::USER_ID], '@user');
+        $userField = Field::EQ('user_id', $_SESSION[Key::USER_ID], ':user');
         $userField->qualifier = Table::FEED;
         return [$idField, $userField];
     }
diff --git a/src/lib/User.php b/src/lib/User.php
index 57f541b..7223e5d 100644
--- a/src/lib/User.php
+++ b/src/lib/User.php
@@ -57,7 +57,7 @@ class User
      */
     public static function hasBookmarks(): bool
     {
-        $fields = [Data::userIdField(Table::FEED), Data::bookmarkField(Table::ITEM)];
+        $fields = [Data::userIdField(Table::FEED), Data::bookmarkField(true, Table::ITEM)];
         return Custom::scalar(Query\Exists::query(ItemWithFeed::FROM_WITH_JOIN, Query::whereByFields($fields)),
             Parameters::addFields($fields, []), new ExistsMapper());
     }
diff --git a/src/public/feeds.php b/src/public/feeds.php
index 13763a3..3506e05 100644
--- a/src/public/feeds.php
+++ b/src/public/feeds.php
@@ -19,33 +19,31 @@ include '../start.php';
 
 FeedReaderCentral\Security::verifyUser();
 
-$field = Field::EQ('user_id', $_SESSION[Key::USER_ID], '@user');
+$field = Field::EQ('user_id', $_SESSION[Key::USER_ID], ':user');
 $feeds = Custom::list(Query\Find::byFields(Table::FEED, [$field]) . " ORDER BY lower(data->>'title')",
     $field->appendParameter([]), new DocumentMapper(Feed::class));
 
-page_head('Your Feeds'); ?>
-<h1>Your Feeds</h1>
-<article>
-    <p class=action_buttons><?=hx_get('/feed/?id=new', 'Add Feed')?></p><?php
-    foreach ($feeds->items() as /** @var Feed $feed */ $feed) {
-        $item   = Table::ITEM;
-        $counts = Custom::single(<<<SQL
-            SELECT (SELECT COUNT(*) FROM $item WHERE data->>'feed_id' = @feed) AS total,
-                   (SELECT COUNT(*) FROM $item WHERE data->>'feed_id' = @feed AND data->>'is_read' = '0') AS unread,
-                   (SELECT COUNT(*) FROM $item WHERE data->>'feed_id' = @feed AND data->>'is_bookmarked' = '1') AS marked
-            SQL, ['@feed' => $feed->id], new ArrayMapper()) ?? ['total' => 0, 'unread' => 0, 'marked' => 0]; ?>
-        <p><strong><?=htmlentities($feed->title)?></strong><br>
-            <span class=meta><em>Last Updated <?=date_time($feed->updated_on)?> &bull;
-                As of <?=date_time($feed->checked_on)?></em><br>
-                <?=hx_get("/feed/?id=$feed->id", 'Edit')?> &bull; Read
-                <?=$counts['unread'] > 0 ? hx_get("/feed/items?id=$feed->id&unread", 'Unread') : 'Unread'?>
-                (<?=$counts['unread']?>) |
-                <?=$counts['total'] > 0 ? hx_get("/feed/items?id=$feed->id", 'All') : 'All'?> (<?=$counts['total']?>) |
-                <?=$counts['marked'] > 0 ? hx_get("/feed/items?id=$feed->id&bookmarked", 'Bookmarked') : 'Bookmarked'?>
-                (<?=$counts['marked']?>) &bull;
-                <a href=/feed/?id=<?=$feed->id?> hx-delete=/feed/?id=<?=$feed->id?>
-                   hx-confirm="Are you sure you want to delete &ldquo;<?=htmlspecialchars($feed->title)?>&rdquo;? This will remove the feed and all its items, including unread and bookmarked.">Delete</a>
-            </span><?php
-    } ?>
-</article><?php
+page_head('Your Feeds');
+echo '<h1>Your Feeds</h1><article><p class=action_buttons>' . hx_get('/feed/?id=new', 'Add Feed') . '</p>';
+foreach ($feeds->items() as /** @var Feed $feed */ $feed) {
+    $item   = Table::ITEM;
+    $counts = Custom::single(<<<SQL
+        SELECT (SELECT COUNT(*) FROM $item WHERE data->>'feed_id' = :feed)                                AS total,
+               (SELECT COUNT(*) FROM $item WHERE data->>'feed_id' = :feed AND data->>'is_read'       = 0) AS unread,
+               (SELECT COUNT(*) FROM $item WHERE data->>'feed_id' = :feed AND data->>'is_bookmarked' = 1) AS marked
+        SQL, [':feed' => $feed->id], new ArrayMapper()) ?? ['total' => 0, 'unread' => 0, 'marked' => 0];
+    echo '<p><strong>' . htmlentities($feed->title) . '</strong><br>'
+        . '<span class=meta><em>Last Updated ' . date_time($feed->updated_on) . ' &bull; '
+        . 'As of ' . date_time($feed->checked_on) . '</em><br>' . hx_get("/feed/?id=$feed->id", 'Edit') . ' &bull; '
+        . 'Read ' . ($counts['unread'] > 0 ? hx_get("/feed/items?id=$feed->id&unread", 'Unread') : 'Unread')
+            . " ({$counts['unread']}) | "
+        . ($counts['total'] > 0 ? hx_get("/feed/items?id=$feed->id", 'All') : 'All') . " ({$counts['total']}) | "
+        . ($counts['marked'] > 0 ? hx_get("/feed/items?id=$feed->id&bookmarked", 'Bookmarked') : 'Bookmarked')
+            . " ({$counts['marked']}) &bull; "
+        . "<a href=/feed/?id=$feed->id hx-delete=/feed/?id=$feed->id "
+            . ' hx-confirm="Are you sure you want to delete &ldquo;' . htmlspecialchars($feed->title)
+                . '&rdquo;? This will remove the feed and all its items, including unread and bookmarked.">Delete</a>'
+        . '</span>';
+}
+echo '</article>';
 page_foot();
diff --git a/src/public/index.php b/src/public/index.php
index 3f9688e..741dada 100644
--- a/src/public/index.php
+++ b/src/public/index.php
@@ -21,6 +21,7 @@ if (key_exists('refresh', $_GET)) {
         add_error(nl2br($refreshResult['error']));
     }
 }
+//const PDO_DOC_DEBUG_SQL = true;
 
 $list = match (true) {
     key_exists('bookmarked', $_GET) => ItemList::allBookmarked(),
diff --git a/src/start.php b/src/start.php
index 336cf32..b73be31 100644
--- a/src/start.php
+++ b/src/start.php
@@ -12,7 +12,7 @@ session_start([
     'cookie_httponly' => true,
     'cookie_samesite' => 'Strict']);
 
-//const DOC_DEBUG_SQL = true;
+//const PDO_DOC_DEBUG_SQL = true;
 
 /**
  * Add a message to be displayed at the top of the page
diff --git a/src/util/db-update.php b/src/util/db-update.php
index 3440a40..73917e5 100644
--- a/src/util/db-update.php
+++ b/src/util/db-update.php
@@ -16,6 +16,8 @@ require __DIR__ . '/../cli-start.php';
 
 cli_title('DATABASE UPDATE');
 
+//const PDO_DOC_DEBUG_SQL = true;
+
 if ($argc < 2) display_help();
 
 switch ($argv[1]) {