Here is a list of all topics with brief descriptions:

TWI Status Codes	Status codes returned by the TWI hardware interface
Status flags for software TWI transmission.	Different status flags that can be set during software TWI transmission
Software TWI (I2C) Control Macros	Macros for controlling SCL and SDA lines in software TWI implementation
Display Control Command	Command and options for controlling the OLED display power state
Display Clock Command	Command and options for configuring the OLED display clock timing and frequency
Multiplex Ratio Command	Command and options for setting the OLED display multiplex ratio
Display Offset Command	Command and option for configuring the display offset of the OLED
Display Start Line Command	Command and option for setting the vertical start line of the OLED display
Charge Pump Command	Command and options for configuring the OLED display's charge pump
Segment Remap Command	Command and options for configuring segment remapping of the OLED display
COM Output Scan Direction Command	Command and options for setting the COM output scan direction on the OLED display
COM Pins Hardware Configuration Command	Command and options for configuring the hardware setup of COM pins on the OLED display
Contrast Control Command	Command and option for setting the OLED display contrast
Entire Display ON Command	Command and options for controlling the entire display illumination
Display Mode Command	Command and options for setting the OLED display mode (normal or inverse)
Memory Addressing Mode Command	Command and options for configuring the OLED display memory addressing mode
OLED Software/Hardware TWI (I2C) Control Macros	Macros for abstracting OLED TWI (I2C) communication interface