-* Write, test join.
-
-* Write, test user programs.
-
-* Figure out PD/PT management API.
- - We should document what's in mmu.h.
- - pagedir.[ch] is undocumented.
-
-* Write, test VM.
-
-* Implement `jitter'.
-
-* Test list, hash ADTs.
-
-* Compile and install gdb, dbg versions.
- - Test gdb version.
-
* Write "tour".
+* Using PAL_USER.
+
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* Cygwin support: