diff --git a/TODO b/TODO
index dda5180..73c4d54 100644
--- a/TODO
+++ b/TODO
@@ -1,8 +1,6 @@
 
  * Improve error/warning messaging when parsing configuration file
 
- * Refactor and consolidate arbitrary set speed function into one file for all platforms
-
  * Consider reworking line toggle and line pulse featueres in case requests are made to apply them to more lines:
 
      ctrl-t g Toggle serial line
diff --git a/src/misc.c b/src/misc.c
index 7e8ffbd..8ab8970 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -120,3 +120,13 @@ long string_to_long(char *string)
 
     return result;
 }
+
+int ctrl_key_code(unsigned char key)
+{
+    if ((key >= 'a') && (key <= 'z'))
+    {
+        return key & ~0x60;
+    }
+
+    return -1;
+}