Spellchecking dictionaries in LyX 2.4 installer

[Yuriy Skalko]

>> These make an additional disk size of approximately 246 MB if
>> uncompressed.
>> Fortunately the disk image can use a HFS+ feature: the files are
>> compressed and so it's 50 MB in package and on target systems.
>>
>> I don’t know if something similar is possible on windows.
>>
> No, unpacked files always take the full size on Windows.

Windows has compression too, but compression level is not as good as on 
macOS:

https://docs.microsoft.com/en-us/windows/win32/fileio/compression-attribute

Yuriy