Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/doc/LPC/ed4 b/doc/LPC/ed4
new file mode 100644
index 0000000..2d5303c
--- /dev/null
+++ b/doc/LPC/ed4
@@ -0,0 +1,12 @@
+NAME
+        ed4
+
+DESCRIPTION
+        How to copy from a standard file.
+
+        Enter ed. Then do 'r /room/vill_green.c'. Now you have
+        something in the buffer. Change it into what you want it to
+        be. Then 'w /players/peter/hall.c'. Or 'w hall.c'.
+
+SEE ALSO
+        ed5(LPC)