diff --git a/p/db/index.js b/p/db/index.js
index 66731693..9f3c4ee0 100644
--- a/p/db/index.js
+++ b/p/db/index.js
@@ -143,6 +143,10 @@ const createParseJourneyLeg = (profile, opt, data) => {
 	return parseJourneyLegWithLoadFactor
 }
 
+// todo:
+// [ { type: 'hint',
+//     code: 'P5',
+//     text: 'Es gilt ein besonderer Fahrpreis' }
 const hintsByCode = Object.assign(Object.create(null), {
 	fb: {
 		type: 'hint',
diff --git a/parse/journey-leg.js b/parse/journey-leg.js
index 12e2b31f..aafce36e 100644
--- a/parse/journey-leg.js
+++ b/parse/journey-leg.js
@@ -45,6 +45,10 @@ const createParseJourneyLeg = (profile, opt, data) => {
 	// todo: pt.isRchbl, pt.chRatingRT, pt.chgDurR, pt.minChg
 	// todo: pt.dep.dProgType, pt.arr.dProgType
 	// todo: what is pt.jny.dirFlg?
+	// todo: what is pt.recState?
+	// todo: what is `sty: 'UNDEF'`?
+	// todo: pt.prodL
+	// todo: pt.parJnyL (list of coupled trains)
 
 	// j = journey, pt = part
 	// todo: pt.planrtTS
@@ -89,6 +93,7 @@ const createParseJourneyLeg = (profile, opt, data) => {
 			res.distance = pt.gis && pt.gis.dist || null
 			if (pt.type === 'TRSF') res.transfer = true
 
+			// https://gist.github.com/derhuerst/426d4b95aeae701843b1e9c23105b8d4#file-tripsearch-2018-12-05-http-L4207-L4229
 			if (opt.remarks && Array.isArray(pt.gis.msgL)) {
 				applyRemarks(res, hints, warnings, pt.gis.msgL)
 			}
@@ -120,6 +125,7 @@ const createParseJourneyLeg = (profile, opt, data) => {
 							value: stopL[i].locX
 						})
 					}
+					// todo: parse `pt.dep.msgL` & `pt.arr.msgL`
 					// todo: apply leg-wide remarks if `parseStopovers` is false
 					applyRemarks(res, hints, warnings, pt.jny.msgL)
 				}
diff --git a/parse/movement.js b/parse/movement.js
index e24b01e5..1ebbe4b8 100644
--- a/parse/movement.js
+++ b/parse/movement.js
@@ -21,6 +21,7 @@ const createParseMovement = (profile, opt, data) => {
 				latitude: m.pos.y / 1000000,
 				longitude: m.pos.x / 1000000
 			} : null,
+			// todo: stopL[0] is the first of the trip! -> filter out
 			nextStopovers: m.stopL.map(pStopover),
 			frames: []
 		}