What we think each token means. Where we're unsure we say so.
advanced | Client supports advanced rendering features (newer OBML stream, richer HTML/CSS subset, ECMAScript). |
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download | Client can download arbitrary files via Opera Mini's proxy (Content-Disposition: attachment etc.). |
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file_system | Client can read files from the device filesystem for upload (<input type="file">) and save downloads. This is the capability we are probing here. |
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folding | Server-side rendering may collapse repeated content (nav bars, long lists) into folds the user can expand. Reduces stream size. |
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httpping | Likely a navigation-timing/keepalive mechanism between client and Opera's proxy. Not authoritatively documented. |
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pingback | Likely support for the <a ping="..."> attribute — the proxy fires the background notification on link tap. Not authoritatively documented. |
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routing | Not authoritatively documented. Plausibly Opera Mini's choice of proxy entry point / routing through specific clusters. |
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