[Expo-tech] surveyscans & svx

[Philip Sargent (Gmail)]

Just trundling through all the svx files looking for the *ref statements
(several variable formats of ;Ref.:)
to see if I can close the loop between surveyscans' wallet folder .json file
referring to a svx file and
the svx file referring to the <wallet>/.json file.

Some earlier svx files didn't anticipate this use of the ref field, e.g.
	caves-1623/145/145cucc/part3to4.svx :
	*ref:  "p 43 of landscape-format brown-hardback notebook in AndyW's
archive p 43"

and
	caves-1623/115/cucc/commando.svx:
	*ref:  "drawing on orange squared graph paper in AndyW's big yellow
ringbinder"

	caves-1623/144/drucken/144.svx 
	*ref: "I know I've got these on paper somewhere ..."

There are 1,743 of these *ref: fields in the svx files.
Several of them seem to use the template value of "2040#00" unchanged.