“Full disclosure” ECG is the concept of printing a particular lead of ECG in a tiny format where you can see the full QRS complex albeit in a tiny format .
This allows you to still be able to discern rhythm and artifact – is usefull for troubleshooting and / or choosing an optimal ten second window to capture as a 12 lead ECG.
Holter reports have been doing this for decades since the digital revolution (or the advent of the Analog Devices AD620 low-noise, high sensitivity operational amplifier.