@manual{xfun,
	title        = {{xfun}: Supporting Functions for Packages Maintained by {Yihui Xie}},
	author       = {Yihui Xie},
	year         = 2026,
	url          = {https://github.com/yihui/xfun},
	note         = {R package version 0.59}
}
@manual{tinyimg,
	title        = {{tinyimg}: Optimize and Compress Images},
	author       = {Yihui Xie},
	year         = 2026,
	doi          = {10.32614/CRAN.package.tinyimg},
	url          = {https://github.com/yihui/tinyimg},
	note         = {R package version 0.4}
}
