Function available in CINEMA 4D Broadcast, Studio MoGraph Field Layer
How spatial value distribution works is explained here. It basically works the same in this menu. Descriptions for Mode and Radius can be found by clicking on the respective links.
Enabling this function will constantly update the effect in the Viewport or for rendering. The updates will be passed on to the list layer, which will require more time and can therefore be disabled here (will then only work for static maps).
MoData Sub-Index [1..4]
These settings will become active if a MoText object is placed into the Field list. A MoText object has several effector lists (e.g., letters, words, lines, etc.). the MoData Sub-Index setting can be used to select which effector combination should be used for the MoGraph Layer.