-| Field | Description | Type | Null | Key | Default | Extra |
-| ----- | ----------- | ---- | ---- | --- | ------- | ----- |
-| id | sequential ID | int unsigned | YES | PRI | | auto_increment |
-| guid | A unique identifier for this conversation | varchar(255) | YES | | | |
-| recips | sender_handle;recipient_handle | text | NO | | | |
-| uid | Owner User id | mediumint unsigned | YES | | 0 | |
-| creator | handle of creator | varchar(255) | YES | | | |
-| created | creation timestamp | datetime | YES | | 0001-01-01 00:00:00 | |
-| updated | edited timestamp | datetime | YES | | 0001-01-01 00:00:00 | |
-| subject | subject of initial message | text | NO | | | |
+Fields
+------
+
+| Field | Description | Type | Null | Key | Default | Extra |
+| ------- | ----------------------------------------- | ------------------ | ---- | --- | ------------------- | -------------- |
+| id | sequential ID | int unsigned | NO | PRI | NULL | auto_increment |
+| guid | A unique identifier for this conversation | varbinary(255) | NO | | | |
+| recips | sender_handle;recipient_handle | text | YES | | NULL | |
+| uid | Owner User id | mediumint unsigned | NO | | 0 | |
+| creator | handle of creator | varchar(255) | NO | | | |
+| created | creation timestamp | datetime | NO | | 0001-01-01 00:00:00 | |
+| updated | edited timestamp | datetime | NO | | 0001-01-01 00:00:00 | |
+| subject | subject of initial message | text | YES | | NULL | |
+
+Indexes
+------------
+
+| Name | Fields |
+| ------- | ------ |
+| PRIMARY | id |
+| uid | uid |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uid | [user](help/database/db_user) | uid |