Hotkeys and trainer capabilities:

Turn on Num Lock and use NUM1-4 to enable features.

About the problem with sample 192:

If you use the infinite items feature, then when you take the first sample 192, it will be immediately used by the player, but its quantity will not decrease from 1 to 0 as it should without a cheat.

The next time you try to take the second sample 192, you will receive a message that you already have the maximum sample 192. To fix this, use the fourth function of the trainer, which disables the limit on the number of items. With it you can take the second sample 192.

This is a trainer for the regular (non-remastered) version of the game.