configuration settings PIC's

What about the configuration settings on pics, I want to know if there is a tutorial about it, because i haven't seen it on pic's manual.

What does they mean?

__config 0x3D18
__CONFIG _CP_OFF
_WDT_OFF
_BODEN_OFF
_PWRTE_ON
_HS_OSC
_WRT_ENABLE_ON
_LVP_OFF
_CPD_OFF

are there others?

35007B.pdf

6.1 Configuration Bits
The configuration bits can be programmed (read as '0'),
or left unprogrammed (read as '1'), to select various
device configurations.

Now I understand, thank you