I got it in their manual u posted...They say it as Repeated Start.From a tutorial on i2c by microchip ,it quotes as follows:
"A restart condition indicates that a device would like
to transmit more data, but does not wish to release the line. This is done when a
start must be sent, but a stop has not occurred. It is also a convenient way to send a
stop followed by a start right after each other. It prevents other devices from
grabbing the bus between transfers.
If you are talking to one device, such as a serial EEPROM, you may not want to be
interrupted when transmitting addresses and gathering data. A restart condition will
handle this.
The restart condition is represented by a “R” in this presentation.
The signaling used for a restart can be seen to be nothing more than a stop condition
quickly followed by a start condition.
The PICmicro microcontroller also will handle this. You simply request a restart
condition be sent, then wait for it to complete."
Anyways thanks for your interest and documentation of I2C you provided.