Document the marker properties connected_exclude, veto_disintegrate, veto_fragmentation, and veto_shatter, which can effect the dungeon cell a marker is on is treated by the game.
3GDZE2MD5D6BIA3GS6SQ2XVW6SRVWPWWEFZ623WBOAOZQ5IKT5WQC * connected_exclude: Consider the cell to be separate from neighboringcells with identical or similar features. Currently only usefulfor preventing adjacent doors from grouping together into a gate,forcing them to open and close as separate doors. See the EvilZoo (minivault_9) in dat/mini.des for an example.* veto_disintegrate: If this property is set to "veto" then the cellwill be immune to disintegration.* veto_fragmentation: If this proprety is set to "veto" then the cellwill be unaffected by fragmentation (Lee's Rapid Deconstructionspell).* veto_shatter: If this property is set to "veto" then the cell willbe unaffected by the Shatter spell.