ACCEPT_MATCH
ACCEPT_MATCH: "accept_match"
REJECT_MATCH
REJECT_MATCH: "reject_match"
SELECT_ALTERNATIVE
SELECT_ALTERNATIVE: "select_alternative"
RESET_TO_PENDING
RESET_TO_PENDING: "reset_to_pending"
SELECT_SEARCH_MATCH
SELECT_SEARCH_MATCH: "select_search_match"
BATCH_OPERATION
BATCH_OPERATION: "batch_operation"
Command types that can be undone/redone.
Source