I use markers a lot to see exactly what is being done in buffers, etc.
It would be nice addition to a future Qeditor give the option to have it put in unique markers like it does with the date and time.
For example:
.data
Mark1 db "Start of buffer",0
Buffer db
Mark2 db "End",0
Mark3 db "Start of error messages.",0
Screiben db "Es tut mir lite.",0
Mark4 db "End",0