First exercise — trace a CSV export

Download https://rea.tools/examples/notes-example.zip into a new folder and
extract the contents.

Use REA to investigate what happens when I click "Export notes". Trace the
flow from the button to the file write.

Show where notes.csv is created, which fields it contains, and the files and
functions that prove each step.

First look at an unfamiliar app

Use REA to give me a map of <program>: its main parts, entry points and the
three features worth investigating first. Keep it short and point to evidence
for each claim.

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