# `Dev.CalibrateHandler`
[🔗](https://github.com/mcass19/bb_tui/blob/v0.3.0/dev/calibrate_handler.ex#L3)

Dev-only command handler that sleeps for a couple of seconds before
succeeding. Useful for eyeballing the executing-command throbber and
the events panel's `command.started`/`command.succeeded` pair without
a real long-running operation.

Runs in its own command process spawned by `BB.Command`, so the
sleep does not block the TUI runtime.

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*Consult [api-reference.md](api-reference.md) for complete listing*