- *
- * - Integer: return a single result array; e.g. index = 0 will return the first result, 1 will return the second, and -1 will return the last.
- * - String: index the results by a field value; e.g. index = "name" will return an associative array with the field 'name' as keys.
- * - Non-associative array: return a single value from each result; e.g. index = ['title'] will return a non-associative array of strings - the 'title' field from each result.
- * - Associative array: a combination of the previous two modes; e.g. index = ['name' => 'title'] will return an array of strings - the 'title' field keyed by the 'name' field.
+ * - **Integer:** return a single result array;
+ * e.g. `$index = 0` will return the first result, 1 will return the second, and -1 will return the last.
+ * - **String:** index the results by a field value;
+ * e.g. `$index = "name"` will return an associative array with the field 'name' as keys.
+ * - **Non-associative array:** return a single value from each result;
+ * e.g. `$index = ['title']` will return a non-associative array of strings - the 'title' field from each result.
+ * - **Associative array:** a combination of the previous two modes;
+ * e.g. `$index = ['name' => 'title']` will return an array of strings - the 'title' field keyed by the 'name' field.