LG 43SH7PE Owner's Manual page 110

60
88. Natural Size (Command: s n, a5)
Sets the Natural Size feature.
Transmission
[s][n][ ][Set ID][ ][a][5][ ][Data][Cr]
Data 00 - 64: Natural Size 0 - 100
Acknowledgment
[n][ ][Set ID][ ][OK/NG][a][5][Data][x]
* This feature may not be available for all models.