diff --git a/data/pis/gwr.yaml b/data/pis/gwr.yaml
index 3e14525..5047d49 100644
--- a/data/pis/gwr.yaml
+++ b/data/pis/gwr.yaml
@@ -20,7 +20,7 @@ pis:
   - code: 5215
     stops: [bri,kyn,olf,bth,ffd,avn,boa,tro,wsb,fro,bru,clc,yvp,tho,yet,cno,mdn,dcw,upw,wey]
   - code: 5248
-    stops: [wey,upw,dcw,mdn,cno,yet,tho,yvp,clc,bru,fro,wsb,tro,boa,avn,ffd,bth,olf,kyn,bri]
+    stops: [wey,upw,dcw,mdn,cno,yet,tho,yvp,clc,bru,fro,wsb,tro,boa,avn,ffd,bth,olf,kyn,bri] # [reverse,5215]
   - code: 5487
     stops: [wsm,wnm,wor,yat,nls,psn,bmt,bri,lwh,srd,mtp,rda,cfn,sml,shh,avn,sar,svb]
   - code: 5502
@@ -28,7 +28,7 @@ pis:
   - code: 5513
     stops: [cfn,rda,mtp,srd,lwh,bri]
   - code: 5523
-    stops: [fit,srd,lwh,bri]
+    stops: [fit,srd,lwh,bri] # [reverse,5513]
   - code: 5866
     stops: [sal,wmn,dmh,wsb,tro,boa,avf,ffd,bth,olf,kyn,bri]
   - code: 6067
diff --git a/src/pis.py b/src/pis.py
index 692d574..26de545 100644
--- a/src/pis.py
+++ b/src/pis.py
@@ -9,3 +9,6 @@ def load():  # Programatically add a `toc` field to each entry.
         except yaml.YAMLError as exc:
             print(exc)
             return exc
+
+## Do some magic here so that if any pis["pis"]["stops"][0] field contains 'reverse' then get the stops for the code stored in pis["pis"]["stops"][1]
+## reverse the stops and store that.
\ No newline at end of file