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Tell me more.about this legacy mode.

Sengoku Patch 1.2 changelog:
- There is now a Legacy graphics mode that use less memory and only shader model 2 shaders, so that those with lesser machines can run the game as well. This can be set in the settings file with "legacy = yes" instead of "legacy=no".

It looks rather plain, I suppose, but I'm mostly on the political map anyway so I barely notice a difference, and the game just runs that much faster.