diff --git a/core/models/logbooks.py b/core/models/logbooks.py
index 680036a..19cd33d 100644
--- a/core/models/logbooks.py
+++ b/core/models/logbooks.py
@@ -104,14 +104,14 @@ class PersonTrip(TroggleModel):
         ordering = ('-personexpedition',)
         #order_with_respect_to = 'personexpedition'
         
-    def persontrip_next(self):
+    def next_personlog(self):
         futurePTs = PersonTrip.objects.filter(personexpedition = self.personexpedition, logbook_entry__date__gt = self.logbook_entry.date).order_by('logbook_entry__date').all()
         if len(futurePTs) > 0:
             return futurePTs[0]
         else:
             return None
 
-    def persontrip_prev(self):
+    def prev_personlog(self):
         pastPTs = PersonTrip.objects.filter(personexpedition = self.personexpedition, logbook_entry__date__lt = self.logbook_entry.date).order_by('-logbook_entry__date').all()
         if len(pastPTs) > 0:
             return pastPTs[0]
diff --git a/core/views/logbooks.py b/core/views/logbooks.py
index 5ffae6a..47aa7e1 100644
--- a/core/views/logbooks.py
+++ b/core/views/logbooks.py
@@ -100,12 +100,12 @@ def expedition(request, expeditionname):
     dateditems = list(entries) + list(blocks) # evaluates the Django query and hits db 
     dates = sorted(set([item.date for item in dateditems]))
     
-    allpersontrips = PersonTrip.objects.filter(personexpedition__expedition=expo)
+    allpersonlogentries = PersonTrip.objects.filter(personexpedition__expedition=expo)
     
     
     personexpeditiondays = [ ]
     for personexpedition in expo.personexpedition_set.all():
-        expotrips = allpersontrips.filter(personexpedition=personexpedition) # lazy
+        expotrips = allpersonlogentries.filter(personexpedition=personexpedition) # lazy
         expoblocks = blocks.filter(survexpersonrole__personexpedition=personexpedition)
         
         prow = [ ]
@@ -168,7 +168,7 @@ def get_person_chronology(personexpedition):
     res = { }
     for persontrip in personexpedition.persontrip_set.all():
         a = res.setdefault(persontrip.logbook_entry.date, { })
-        a.setdefault("persontrips", [ ]).append(persontrip)
+        a.setdefault("personlogentries", [ ]).append(persontrip)
 
     for personrole in personexpedition.survexpersonrole_set.all():
         if personrole.survexblock.date: # avoid bad data from another bug
@@ -180,10 +180,10 @@ def get_person_chronology(personexpedition):
 
     res2 = [ ]
     for rdate in rdates:
-        persontrips   = res[rdate].get("persontrips", [])
+        personlogentries   = res[rdate].get("personlogentries", [])
         personroles   = res[rdate].get("personroles", [])
-        for n in range(max(len(persontrips), len(personroles) )):
-            res2.append(((n == 0 and rdate or "--"), (n < len(persontrips) and persontrips[n]), (n < len(personroles) and personroles[n]) ))
+        for n in range(max(len(personlogentries), len(personroles) )):
+            res2.append(((n == 0 and rdate or "--"), (n < len(personlogentries) and personlogentries[n]), (n < len(personroles) and personroles[n]) ))
             
     return res2
 
@@ -227,10 +227,8 @@ def logbookentry(request, date, slug):
                 # svxothers = None
             svxothers = SurvexBlock.objects.filter(date=date)
             this_logbookentry=this_logbookentry[0]
-            # This is the only page that uses presontrip_next and persontrip_prev
+            # This is the only page that uses persontrip_next and persontrip_prev
             # and it is calculated on the fly in the model 
-            # duration = time.time()-start
-            # print(f"--- Render after {duration:.2f} seconds")
             return render(request, 'logbookentry.html', 
                 {'logbookentry': this_logbookentry, 'trips': trips, 'svxothers': svxothers, 'wallets': wallets})
     else:
diff --git a/templates/logbookentry.html b/templates/logbookentry.html
index 584da8e..d9b0de2 100644
--- a/templates/logbookentry.html
+++ b/templates/logbookentry.html
@@ -29,30 +29,30 @@
 
 <table class="cavers">
 <tr><th>Caver</th><th>T/U</th><th>Prev</th><th>Next</th></tr>
-{% for persontrip in logbookentry.persontrip_set.all %}
+{% for personlogentry in logbookentry.persontrip_set.all %}
 <tr>
-  {% if persontrip.is_logbook_entry_author %}
+  {% if personlogentry.is_logbook_entry_author %}
     <td class="author">
   {% else %}
     <td>
   {% endif %}
-  <a href="{{ persontrip.personexpedition.get_absolute_url }}">{{persontrip.personexpedition.person}}</a>
+  <a href="{{ personlogentry.personexpedition.get_absolute_url }}">{{personlogentry.personexpedition.person}}</a>
   </td>
   
   <td>
-  {% if persontrip.timeunderground %}
-     - T/U {{persontrip.timeunderground}}</p>
+  {% if personlogentry.timeunderground %}
+     - T/U {{personlogentry.timeunderground}}</p>
   {% endif %}
   </td>
 
   <td>
-  {% if persontrip.persontrip_prev %}
-    <a href="{{ persontrip.persontrip_prev.logbook_entry.get_absolute_url }}">{{persontrip.persontrip_prev.logbook_entry.date|date:"D d M Y"}}</a>
+  {% if personlogentry.prev_personlog %}
+    <a href="{{ personlogentry.prev_personlog.logbook_entry.get_absolute_url }}">{{personlogentry.prev_personlog.logbook_entry.date|date:"D d M Y"}}</a>
   {% endif %}
   </td>
   <td>
-  {% if persontrip.persontrip_next %}
-    <a href="{{ persontrip.persontrip_next.logbook_entry.get_absolute_url }}">{{persontrip.persontrip_next.logbook_entry.date|date:"D d M Y"}}</a>
+  {% if personlogentry.next_personlog %}
+    <a href="{{ personlogentry.next_personlog.logbook_entry.get_absolute_url }}">{{personlogentry.next_personlog.logbook_entry.date|date:"D d M Y"}}</a>
   {% endif %}
   </td>
 
@@ -64,7 +64,7 @@
 <div id="col1">
   <div class="logbookentry">
     <b>{{logbookentry.date|date:"D d M Y"}}</b>
-    {% for persontrip in logbookentry.persontrip_set.all %}{% if persontrip.is_logbook_entry_author %}<br />{{persontrip.personexpedition.person}}{% endif %}{% endfor %}
+    {% for personlogentry in logbookentry.persontrip_set.all %}{% if personlogentry.is_logbook_entry_author %}<br />{{personlogentry.personexpedition.person}}{% endif %}{% endfor %}
     <p>{{logbookentry.text|safe}}</p>
   </div>
 </div>