Minecraft wiki entry for Block_entity_format, associated text: : The block entity's root tag.
 powered: States whether or not the command block is powered by redstone or not.
 auto: Allows to activate the command without the requirement of a redstone signal.
 conditionMet: Indicates whether a conditional command block had its condition met when last activated. True if not a conditional command block.
 LPCondionalMode: Unknown.
 LPRedstoneMode: Unknown.
 LPCommandMode: Unknown.
 conditionalMode: (May not exist) Unknown.
Tags common to command block[show]