diff --git a/dataflow_neuro/coders.act b/dataflow_neuro/coders.act
index d6f11b8..0ced224 100644
--- a/dataflow_neuro/coders.act
+++ b/dataflow_neuro/coders.act
@@ -433,6 +433,8 @@ defproc decoder_2d_synapse_hs (bool? in_req_x[Nx], in_req_y[Ny]; a1of1 synapses[
  * ack_disable blocks the ack being returned to the buffer.
  * Is needed in case there are instabilities while we fiddle with delays.
  */
+ // @TODO : think hard about the fact that the line end pullups are not placed manually,
+ // and write argumentation about whether this is fine
 export template<pint NxC, NyC, Nx, Ny, N_dly_cfg>
 defproc decoder_2d_hybrid (avMx1of2<NxC+NyC> in; bool! out_req_x[Nx], out_req_y[Ny]; bool? dly_cfg[N_dly_cfg], hs_en, ack_disable;
 	bool in_ackB_decoder[Nx]; // AckB lines back to the decoder for handshaking