what does option baords do

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SD is Special cylinder dogging in the center case of 98/99 rim and vertical rod non fire rated devices and is available with standard, EL, QEL, CX and ALK.
The XL11-463 is no longer available, this was an option for the L series electrified locks to come with a 5 ft. pigtail. 
A designer series metal cover is an option with the 1460 series closer, the part number is, 1460-72DS1.
There is not enough room for both options as the dogging mechanism in a standard cylinder dogging and the electronics for the EL or QEL options are both located at the end of the base plate. For 9...
Double cylinders are only available on Von Duprin 98/99 Rim and 98/9975 Mortise devices.
There is no FSA/FSE electrified trim option for the Flacon 24 Series device.