At the start of each message in message center, please display datetime, current design file and current model e.g.

[2099-12-31_10:12:31][my_design_file.dgn][my_model_1] message...

[2099-12-31_10:13:02][my_design_file.dgn][my_model_2] message...

[2099-12-31_10:14:19][another_file.dgn][sheet_1] message...