diff --git a/p/vbb/parse-loc-dhid.js b/p/vbb/parse-loc-dhid.js
index 1e706238..95c52a32 100644
--- a/p/vbb/parse-loc-dhid.js
+++ b/p/vbb/parse-loc-dhid.js
@@ -12,6 +12,7 @@ const parseAndAddLocationDHID = (loc, l) => {
 	// It seems that the DHID of the parent station is being used, not of the stop.
 	// if (!loc.ids) loc.ids = {}
 	// loc.ids.dhid = dhid
+	// todo: use loc.ids.stationDHID instead?
 	loc.stationDHID = dhid
 }
 
diff --git a/parse/arrival-or-departure.js b/parse/arrival-or-departure.js
index 37c1eed9..81df5cbf 100644
--- a/parse/arrival-or-departure.js
+++ b/parse/arrival-or-departure.js
@@ -5,7 +5,7 @@ const findRemarks = require('./find-remarks')
 const ARRIVAL = 'a'
 const DEPARTURE = 'd'
 
-// todo: what is d.jny.dirFlg?
+// todo: pt.jny.dirFlg – https://github.com/alexander-albers/tripkit/blob/07047c6ddef24339ebd49a86a78158bca8047421/Sources/TripKit/Provider/AbstractHafasClientInterfaceProvider.swift#L347-L353 & https://github.com/alexander-albers/tripkit/commit/07047c6ddef24339ebd49a86a78158bca8047421#commitcomment-68471656
 // todo: d.stbStop.dProgType/d.stbStop.aProgType
 // todo: d.stbStop.dProdX/aProdX can be different than d.prodX
 
diff --git a/parse/hint.js b/parse/hint.js
index b5270374..dc05d3d4 100644
--- a/parse/hint.js
+++ b/parse/hint.js
@@ -27,6 +27,28 @@ const linkTypesByCode = Object.assign(Object.create(null), {
 // todo: expose h.type somehow
 // todo: https://github.com/KDE/kpublictransport/blob/39ac8f9586b9300fa8a9ba0dec010e96fab9ab08/src/lib/backends/hafasmgateparser.cpp#L56-L72
 // todo: h.sty
+
+// SNCB:
+// {
+// 	"type": "A",
+// 	"code": "60",
+// 	"prio": 10,
+// 	"icoX": 2,
+// 	"txtN": "Reservierungspflicht"
+// }
+// {
+// 	"type": "A",
+// 	"code": "64",
+// 	"prio": 110,
+// 	"icoX": 2,
+// 	"txtN": "Zuschlag"
+// }
+// {
+// 	"type": "I",
+// 	"code": "CON_OVERVIEW_TARIF_HINT",
+// 	"icoX": 2,
+// 	"txtN": "Für diese Strecke ist ein internationales Ticket notwendig."
+// }
 const parseHint = (ctx, h) => {
 	// todo: C
 
diff --git a/parse/journey-leg.js b/parse/journey-leg.js
index f5a5903d..8dfd7e54 100644
--- a/parse/journey-leg.js
+++ b/parse/journey-leg.js
@@ -43,7 +43,7 @@ const applyRemarks = (leg, refs) => {
 
 // todo: pt.status, pt.isPartCncl
 // todo: pt.chRatingRT, pt.chgDurR, pt.minChg
-// todo: what is pt.jny.dirFlg?
+// todo: pt.jny.dirFlg – https://github.com/alexander-albers/tripkit/blob/07047c6ddef24339ebd49a86a78158bca8047421/Sources/TripKit/Provider/AbstractHafasClientInterfaceProvider.swift#L347-L353 & https://github.com/alexander-albers/tripkit/commit/07047c6ddef24339ebd49a86a78158bca8047421#commitcomment-68471656
 // todo: what is pt.recState?
 // todo: what is `sty: 'UNDEF'`?
 // todo: pt.prodL