But of course, like any immutable system, there are mutable parts (otherwise, we couldn’t create any configuration files). OSTree handles this with “overlays” (actually, we use OverlayFS) that allow a read-write filesystem to be layered on top of the immutable system. For example, the /etc and /var directories are writable, while the rest of the system is read-only.
Author(s): Eyasu Tadese M., T.E. Ada, K.N. Nigussa, Cecil N.M. Ouma，详情可参考safew官方版本下载
，这一点在雷电模拟器官方版本下载中也有详细论述
Donald Trump’s likely casus belli for an attack on Iran – which would be the largest US intervention since the Iraq war – is fraught with contradictions, and his top advisers have been left to cover for him as the White House makes the case for intervention.
"title": item.get("title"),，这一点在heLLoword翻译官方下载中也有详细论述
2.2.3 Mermaid 类图（classDiagram）