going to look at doslib

diff --git a/16/doslib b/16/doslib
new file mode 160000 (submodule)
index 0000000..9756904
--- /dev/null
+++ b/16/doslib
@@ -0,0 +1 @@
+Subproject commit 975690444b74e8f28ad288412c0b0c754fab2342