Are there any reference of Adafruit_SS1306 library key

I'm a beginner for arduino. I try to show some text on OLED 128x64 display by using Adafruit_SS1306 library. However, I don't know the meaning of each library key. Are there any dictionary of reference for this library. Thank you in advance.

Hi t_tanawut, welcome.

How about the information from Adafruit themselves (click !) ?.
Adafruit is renowned for their excellent support.