diff --git a/.gitignore b/.gitignore
index 362e83cd..0613f8c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@ vendor/
 Gemfile.lock
 .*history
 .nextflow*
+work/*
diff --git a/data/channel_operators.pptx b/data/channel_operators.pptx
new file mode 100644
index 00000000..56d9825c
Binary files /dev/null and b/data/channel_operators.pptx differ