diff --git a/.fermi.go.swp b/.fermi.go.swp
deleted file mode 100644
index c7848d5..0000000
Binary files a/.fermi.go.swp and /dev/null differ
diff --git a/fermi.go b/fermi.go
index ca596cf..babf122 100644
--- a/fermi.go
+++ b/fermi.go
@@ -359,7 +359,7 @@ func runRepl(stack Stack, reader *bufio.Reader) Stack {
 			continue replForLoop
 		/* Parenthesis */
 		case len(words) == 2 && (words[0] == "*" || words[0] == "+" || words[0] == "-" || words[0] == "/") && words[1] == "(":
-			new_stack := runRepl(Stack{old_dist: INIT_DIST, vars: stack.vars}, reader)
+			new_stack := runRepl(Stack{old_dist: INIT_DIST, vars: stack.vars}, reader) // to do: think if I want to shadow variables or not (right now, variables persist, since I'm copying the map(.
 			stack = operateStackWithDist(stack, new_stack.old_dist, words[0])
 			prettyPrintDist(stack.old_dist)
 		case len(words) == 1 && words[0] == ")":