diff --git a/docs/sequences/enq.md b/docs/sequences/enq.md
index f7d3adfdb..fed8e130d 100644
--- a/docs/sequences/enq.md
+++ b/docs/sequences/enq.md
@@ -14,6 +14,14 @@ The answerback can be configured in the config file using the `enquiry-response`
 configuration setting or on the command line using the `--enquiry-response`
 parameter. The default is to send an empty string (`""`).
 
+## TODO
+
+- Implement method for changing the answerback on-the-fly. This could be part of
+  a larger configuration editor or as a stand-alone method.
+
 ## References
 
 - https://vt100.net/docs/vt100-ug/chapter3.html
+- https://documentation.help/PuTTY/config-answerback.html
+- https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h4-Single-character-functions:ENQ.C29
+- https://invisible-island.net/xterm/manpage/xterm.html#VT100-Widget-Resources:answerbackString