diff --git a/tracing/gumball.pdf b/tracing/gumball.pdf new file mode 100644 index 0000000..06274c1 Binary files /dev/null and b/tracing/gumball.pdf differ diff --git a/tracing/gumball.png b/tracing/gumball.png new file mode 100644 index 0000000..3f66803 Binary files /dev/null and b/tracing/gumball.png differ