Added public files
Roughly added all public files. Probably missed some, though.
diff --git a/obj/tools/MGtool/man.d/xtail b/obj/tools/MGtool/man.d/xtail
new file mode 100644
index 0000000..44c2300
--- /dev/null
+++ b/obj/tools/MGtool/man.d/xtail
@@ -0,0 +1,12 @@
+SYNOPSIS
+ xtail <-|+#> <file>
+ or
+ xtail <-|+#> (when reading from a pipe)
+
+DESCRIPTION
+ xtail prints the last part of a given file; It reads from a pipe
+ if no file is given.
+
+EXAMPLES
+ xtail -10 workroom.c prints the last 10 lines of the file workroom.c.
+ xtail +10 workroom.c prints all lines of workroom.c beginning at line 10.