diff --git a/other-really-tricky-bits.md b/other-really-tricky-bits.md
index 76d5a09..07caadf 100644
--- a/other-really-tricky-bits.md
+++ b/other-really-tricky-bits.md
@@ -1 +1,2 @@
-* [[sysout and sysin]]
\ No newline at end of file
+* [[sysout and sysin]]
+* [[stack]]