Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/doc/efun/this_interactive b/doc/efun/this_interactive
new file mode 100644
index 0000000..92938bb
--- /dev/null
+++ b/doc/efun/this_interactive
@@ -0,0 +1,9 @@
+SYNOPSIS
+        object this_interactive();
+
+BESCHREIBUNG
+        Die Funktion gibt das momentane interaktive Objekt zurueck, falls
+        vorhanden, also dasjenige welches "die Entertaste gedrueckt hat".
+
+SIEHE AUCH
+        this_player(E), previous_object(E), interactive(E), living(E)