An Sequence Diagram is on the the types of Interaction Diagram used to understand complex systems.
This diagram was created online using the free software at www.websequencediagrams.com/.
You can edit your own version to revise this when it becomes outdated.
This is the entire source code that generates the diagram:
title Wallet Process Sequence
Survex file-->Survex file: copy empty svx template
note over Wallet: Put original notes into plastic wallet]
loop type survey points for each passage
Wallet->+Survex file: create svx file
Survex file->+Wallet: scan printed svx
end
Wallet-->Wallet: trace over printed svx
Wallet->+Drawing file: create .th or .xml file
Wallet-->Wallet: fix contents.json
# mode online https://www.websequencediagrams.com/
note over Wallet: in expofiles/surveyscans/
note over Drawing file: in :drawings: repo
note over Survex file: in :loser: repo
# Things to add on Drawing and Survex file sequences
# Survex file-->Survex file: create *include svx file (?)
# Drawing file-->Drawing file: re-edit to make whole survey (?)