[2] [DFN[[RUBYB[非負整数]@en[non-negative integer]]]]は、
[[非負]]の[[整数]]です。

[1] [CITE[Packaged Web Apps (Widgets) - Packaging and XML Configuration (Second Edition)]]
( ([TIME[2012-11-22 21:22:20 +09:00]] 版))
<http://w3c.github.com/packed-webapps/packaging/#rule-for-parsing-a-non-negative-integer>