Modal function cues: paintbucket, eyedropper, etc.
Common interaction cues that span functions but aren't in the CSS set: multiaxis, rotation, etc.
Not to mention the innumerable domain-specific possibilities. It's another example of the tension between the idea of browser-as-the-future-ubiquitous-platform and browser-as-lowest-common-denominator-mobile-safe-sandbox, which is eroding the established niche of desktop software for deep, focused, domain-optimized work because of the tyranny of CRUDy consumption-focused web apps.
Common interaction cues that span functions but aren't in the CSS set: multiaxis, rotation, etc.
Not to mention the innumerable domain-specific possibilities. It's another example of the tension between the idea of browser-as-the-future-ubiquitous-platform and browser-as-lowest-common-denominator-mobile-safe-sandbox, which is eroding the established niche of desktop software for deep, focused, domain-optimized work because of the tyranny of CRUDy consumption-focused web apps.