MDDIRTYΒΆ
MDDIRTY_NONE  | 
None.  | 
MDDIRTY_ALL  | 
Check all.  | 
MDDIRTY_ARRAYCOUNT  | 
Array count itself changed (number of different arrays rather than length of arrays).  | 
MDDIRTY_COUNT  | 
Length of the arrays changed.  | 
MDDIRTY_DATA  | 
Data in the arrays changed, must be manually set.  |