'reply_to' => array('type' => 'int', 'description' => 'notice replied to (usually a guess)'),
'is_local' => array('type' => 'int', 'size' => 'tiny', 'default' => 0, 'description' => 'notice was generated by a user'),
'source' => array('type' => 'varchar', 'length' => 32, 'description' => 'source of comment, like "web", "im", or "clientname"'),
- 'conversation' => array('type' => 'int', 'description' => 'id of root notice in this conversation'),
+ 'conversation' => array('type' => 'int', 'description' => 'the local numerical conversation id'),
'repeat_of' => array('type' => 'int', 'description' => 'notice this is a repeat of'),
'object_type' => array('type' => 'varchar', 'length' => 191, 'description' => 'URI representing activity streams object type', 'default' => null),
'verb' => array('type' => 'varchar', 'length' => 191, 'description' => 'URI representing activity streams verb', 'default' => 'http://activitystrea.ms/schema/1.0/post'),