stop access in stops.txt

docs/en/documentation/schedule/reference.md

@@ -222,7 +222,7 @@ Primary key (`stop_id`)
 |  `wheelchair_boarding` | Enum | Optional | Indicates whether wheelchair boardings are possible from the location. Valid options are: <br><br>For parentless stops:<br>`0` or empty - No accessibility information for the stop.<br>`1` - Some vehicles at this stop can be boarded by a rider in a wheelchair.<br>`2` - Wheelchair boarding is not possible at this stop. <br><br>For child stops: <br>`0` or empty - Stop will inherit its `wheelchair_boarding` behavior from the parent station, if specified in the parent.<br>`1` - There exists some accessible path from outside the station to the specific stop/platform.<br>`2` - There exists no accessible path from outside the station to the specific stop/platform.<br><br> For station entrances/exits: <br>`0` or empty - Station entrance will inherit its `wheelchair_boarding` behavior from the parent station, if specified for the parent.<br>`1` - Station entrance is wheelchair accessible.<br>`2` - No accessible path from station entrance to stops/platforms. |
 |  `level_id` | Foreign ID referencing `levels.level_id` | Optional | Level of the location. The same level may be used by multiple unlinked stations.|
 |  `platform_code` | Text | Optional | Platform identifier for a platform stop (a stop belonging to a station). This should be just the platform identifier (eg. "G" or "3"). Words like “platform” or "track" (or the feed’s language-specific equivalent) should not be included. This allows feed consumers to more easily internationalize and localize the platform identifier into other languages. |
-
+|  `stop_access` | Enum | **Conditionally Forbidden** | Indicates how the stop is accessed for a particular station. Valid options are: <br><br>`0` - The stop/platform cannot be directly accessed from the street network. It must be accessed from a station entrance if there is one defined for the station, otherwise the station itself. If there are pathways defined for the station, they must be used to access the stop/platform.<br>`1` - Consuming applications should generate directions for access directly to the stop, independent of any entrances or pathways of the parent station.<br><br>When `stop_access` is empty, the access for the specified stop or platform is considered undefined.<br><br>**Conditionally Forbidden**:<br>- **Forbidden** for locations which are stations (`location_type=1`), entrances (`location_type=2`), generic nodes (`location_type=3`) or boarding areas (`location_type=4`).<br>- **Forbidden** if `parent_station` is empty.<br> - Optional otherwise. |
 
 ### routes.txt