Is there a list of supported file formats?

[hippietrail]

I just tried opening some Amstrad CPC .SNA files and all reported

The document “Arkanoid 2.sna” could not be opened.

After a few minutes I thought, maybe snapshots are only supported on Speccy and not on Amstrad.

I searched but I couldn't find a list confirming that or in fact any kind of list about which file formats are supported for which platforms.

[polluks]

You have the property list https://github.com/TomHarte/CLK/blob/83f5065642b2bc17835675a05c2b478af134e2da/OSBindings/Mac/Clock%20Signal/Info.plist#L597

[tomhannen]

What are the correct file formats for Atari snapshots please? When I look in the plist file, I only see "????"

<string>Atari ST Disk Image</string>
			<key>CFBundleTypeOSTypes</key>
			<array>
				<string>????</string>
			</array>