Lighting-related block variables

[LO1ZB]

Can someone tell me what's the diffrent between "m_SpreadLightFalloff" and "m_Transparent"? I noticed the list is incomplete while adding my own blocks to the list I would guess that when the SpreadLight_Falloff = 1 the light values gets devided or subtracted by 1 but i don't know.... If it would be devided it would be very useless btw
I wanted to add missing things to the list^^

"m_Transparent" is a bool if a light can pass trough a Block and "m_SpreadLightFalloff" is the value, how much the light level is reduce by passing the block.
At least I think so