diff --git a/.gitignore b/.gitignore
index 943af75..5a684fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -115,4 +115,8 @@ dist
 .yarn/unplugged
 .yarn/build-state.yml
 .yarn/install-state.gz
-.pnp.*
\ No newline at end of file
+.pnp.*
+
+# my additions
+package-lock.json
+*~
diff --git a/ToDo.txt b/ToDo.txt
index 4ce1135..84dd7f6 100644
--- a/ToDo.txt
+++ b/ToDo.txt
@@ -1 +1,2 @@
 - Include chemical fomula in input file and use it for output files
+- Increase the number of elements acceptable for each layer, currently up to 5