use int if you have a small number of classes,
The opportunity in AI Optimization exists because most content creators haven't recognized its importance yet. Traditional SEO remains the primary focus, while this emerging traffic channel grows rapidly with relatively light competition. This window won't stay open indefinitely. As more people understand AIO's value, competition will intensify and optimization will become more sophisticated.
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It was only during the pandemic he opted to join his siblings by returning to the Scottish Borders, with him eventually settling in Selkirk.
theguardian.com