Introduction to ZuluScript™
We will be happy to write your custom currency scripts for you; just
let us know what you need. But if you're a techie, feel free to give it a go
yourself. This section is for advanced users.

<ul>
	<li>Each currency definition has an optional initialization script, and a
		required loop script.</li>
	<li>The initialization script is run once, before flight records are processed.
		It is used for declaring variables to accumulate totals into.</li>
	<li>The loop script is run once for each flight record, starting from the most
		recent, until either the currency check passes or all flight records
		have been processed.</li>
	<li>The loop script is where you'll perform your checks (landings, approaches,
		aircraft type, etc). Once the currency parameters are satisfied, the
		loop script will use the predefined statement "currency_ok = 1;" to
		mark success.</li>
</ul>