diff --git a/readme.md b/readme.md
index ab1f93a2..115d97bc 100644
--- a/readme.md
+++ b/readme.md
@@ -8,12 +8,19 @@
 This is a very early version. What works:
 
 * rudimentary `/journeys` including lowest prices
+* `/locations`, `/locations/nearby`
+* `/departures`, `/arrivals` (requires a DB API Key for RIS::Boards, maybe you find one somewhere ;)
 
-What doesn't work (yet):
+What doesn't work (yet, see TODO's scattered around the code):
 
-* `/journeys` details like scheduledDays, stop/station groups, tickets, some line details (see TODO's scattered around the code)...
+* `/journeys` details like scheduledDays, stop/station groups, tickets, some line details ...
+* `/journeys` uses different tripIds compared to departure and arrival boards...
+* certain stop details like products for `/locations` and geopositions for departures and arrivals
+* some query options like BahnCards etc. 
 * all other endpoints
 
+Feel free report anything that you stumble upon via Issues or create a PR :)
+
 Also consult the relevant **[documentation](https://github.com/public-transport/hafas-rest-api/docs/readme.md)** of [hafas-client](https://github.com/public-transport/hafas-client/) (but beware of the limited functionality of db-vendo-client).
 
 
@@ -29,6 +36,7 @@ See an example in [api.js](api.js). It shows how you can use `db-vendo-client` t
 
 There are [community-maintained TypeScript typings available as `@types/hafas-client`](https://www.npmjs.com/package/@types/hafas-client). 
 
+For the `/departures` and `/arrivals` endpoints, `DB_API_KEY` and `DB_CLIENT_ID` environment variables for RIS::Boards have to be set.
 
 ## API