(This is mostly a note2self)

• Merge all files collected containing waypoints using gpsbabel:
  $ gpxappend Waypoints*.gpx
• Convert the resulting file to csv:
  $ 2csv appended.gpx
• sort the resulting file for the names of the Waypoints (and lowercase the names):
  (this helps when you edit the file to work on similar points with c&p)
  $ less appended.csv | tr [:upper:] [:lower:]| awk -F “;” ‘{print $3”;”$1”;”$2}’| sort | awk -F “;” ‘{print $2”;”$3”;”$1}’ > appended_lower_sort.csv
• edit the csv file to your liking
  examples:
  40.50591;20.22520;;h20 -> 40.50591;20.22520;amenity;drinking_water
  40.07476;20.13942;;hotel relax > 40.07476;20.13942;tourism;hotel;name;Hotel Relax
  I prefer to do this editing with libreoffice.

(When I am done with the editing, part II will follow)