diff --git a/todo.txt b/todo.txt
index 8cfbb78..aff725b 100644
--- a/todo.txt
+++ b/todo.txt
@@ -4,3 +4,4 @@
 Ideas for flags:
     -m <num> : Print <num>th match (-m 1 = first match, -m 2 = second match)
     -g <num> : Print the <num>th group
+4. Refactor code for flags - make each flag's code a function, which modifies the result of findAllMatches