Final commit? (not entirely sure what all this is now..)

screen.sym

@@ -0,0 +1,51 @@
+00000000 screen.c
+00000a20 CSWTCH.6
+00000000 ulib.c
+00000000 printf.c
+00000550 printint
+00000aa4 digits.0
+00000000 umalloc.c
+00000d58 freep
+00000d5c base
+00000230 strcpy
+00000600 printf
+0000052b greeting
+00000450 memmove
+000004fb mknod
+00000350 gets
+000004cb getpid
+0000053b screen
+00000830 malloc
+000004db sleep
+00000493 pipe
+00000523 getch
+000004f3 write
+000004b3 fstat
+000004a3 kill
+000004bb chdir
+000004ab exec
+0000048b wait
+0000049b read
+00000503 unlink
+0000047b fork
+000004d3 sbrk
+000004e3 uptime
+00000d58 __bss_start
+000002f0 memset
+00000000 main
+00000260 strcmp
+00000533 shutdown
+000004c3 dup
+000003c0 stat
+00000d58 _edata
+00000d64 _end
+0000050b link
+00000483 exit
+00000410 atoi
+00000543 cls
+000002c0 strlen
+000004eb open
+00000310 strchr
+00000513 mkdir
+0000051b close
+000007a0 free