The -debug=... command-line option controls debugging; running with just -debug or -debug=1 will turn
on all categories (and give you a very large debug.log file).
-The Qt code routes qDebug() output to debug.log under category "qt": run with -debug=qt
-to see it.
-
**testnet and regtest modes**
Run with the -testnet option to run with "play zcash" on the test network, if you