phext shell
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* a shell that is phext-aware
* keeps track of your current scroll by coordinate
* allows programs to pass hierarchical information between processes
* 10 operating modes (remaps <ENTER> to apply phext breaks)
* allows you to chain outputs in a hierarchical manner
* F2 -> Line Break
* F3 -> Scroll Break
* F4 -> Section Break
* F5 -> Chapter Break
* F6 -> Book Break
* F7 -> Volume Break
* F8 -> Collection Break
* F9 -> Series Break
* F10 -> Shelf Break
* F11 -> Library Break
* F12 -> Toggle auto-scrolling
1.1.1/1.1.1/1.1.1> hello-phext<LB>
Result: All output from the `hello-phext` process will be collected on the scroll starting at 2.1.1/1.1.1/1.1.1.
No additional programs can be started from this node, but we can change our current scroll with the `cs` command.
2.1.1/1.1.1/1.1.1> ls
ERROR: `hello-phext` is currently running. Switch to another scroll context to run a new program.
2.1.1/1.1.1/1.1.1> cs 1.1.1/1.1.1/1.1.2
Result: The user's I/O mount point will be adjusted to the given coordinate, which is not generating any output currently.
1.1.1/1.1.1/1.1.2> cs 1.1.1/1.1.1/1.1.1
Result: The user's I/O mount point will return to the root node, which is also not producing any output currently.