MKUltra was developed upon what the OSS-CIA were taught by the bloodline Families' trauma-based mind-control.
I can only speak of my experience, and survivors of my age, Aaron.
They had these phone-book thick manuals in both...
Program Handlers then tailor commands/triggers specifically to their...
While these certainly could be put into software, etc... this day and age. I don't know, personally, the modern methods.
If you research "how to