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Developer UI -- Subscriptions Logging tab
Developer UI -- Subscriptions tab
*Using the pico engine directly
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Your ruleset could, upon installation, create a channel and return it to you in a directive, and you could then continue on to do other things, directly, without using the developer UI.
A command line UI
Some developers prefer using the command line. You can do this using the curl command, or you can try pico-debug an experimental command line interface.