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diff --git a/handbook/l/life-wallet.txt b/handbook/l/life-wallet.txt
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+Wallet Lifecycle Statechart
+# Philip Sargent 20 May 2020
+# made online https://app.creately.com/diagram/4nGSj2FkKGg/edit
+# philip.sargent@cklebos.eu free account
diff --git a/handbook/l/seq-wallet.txt b/handbook/l/seq-wallet.txt
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+++ b/handbook/l/seq-wallet.txt
@@ -0,0 +1,25 @@
+title Wallet Process Sequence
+# Philip Sargent 20 May 2020
+# made online https://www.websequencediagrams.com/
+# philip.sargent@cambridgeenergy.uk free account
+Survex file-->Survex file: copy empty svx template
+note over Wallet: Put original notes into plastic wallet]
+Wallet-->Wallet: create online 202x#nn
+
+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
+
+note over Wallet: in expofiles/surveyscans/
Each wallet has a corresponding folder in the online system where a record is kept of what information is in the wallet and where the corresponding survey data is filed: @@ -93,6 +103,15 @@ of what information is in the wallet and where the corresponding survey data is
To use the scanner attached to the expo laptop, select the "Simple Scan" icon from the vertical menu of icons which you get by clicking on "Activities" in the top lefthand corner of the screen. +
[ Normal people should skip this,
but nerds need to look here
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diff --git a/handbook/troggle/trogarch.html b/handbook/troggle/trogarch.html
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The core of troggle is the data architecture: the set of tables into which all the cave survey and expo data is poured and stored. These tables are what enables us to produce a large number of different but consistent reports and views. - +