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	<id>https://newgrf-specs.tt-wiki.net/index.php?action=history&amp;feed=atom&amp;title=Callback%3A_32-day_callback</id>
	<title>Callback: 32-day callback - Revision history</title>
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	<updated>2026-05-01T00:49:46Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://newgrf-specs.tt-wiki.net/index.php?title=Callback:_32-day_callback&amp;diff=1587&amp;oldid=prev</id>
		<title>Pm-bot: Create a separate page for each callback</title>
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		<updated>2011-06-16T18:58:06Z</updated>

		<summary type="html">&lt;p&gt;Create a separate page for each callback&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;== 32-day callback (32) ==&lt;br /&gt;
&lt;br /&gt;
This callback is called every 32 game days for each vehicle, although not for all vehicles on the same day. The callback is always&lt;br /&gt;
used when defined, no bit in the action 0 property needs to be set to activate it.&lt;br /&gt;
&lt;br /&gt;
The return value is a bit mask of the following bits:&lt;br /&gt;
&lt;br /&gt;
{| |-&lt;br /&gt;
!Bit!!Value!!Meaning&lt;br /&gt;
|-&lt;br /&gt;
|0||1||Trigger vehicle trigger 10&lt;br /&gt;
|-&lt;br /&gt;
|1||2||Update colour map via callback 2D&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
If no bits are set, nothing happens.&lt;br /&gt;
[[Category:Callbacks]]&lt;/div&gt;</summary>
		<author><name>Pm-bot</name></author>
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