### Instruction:

Extract the cause and effect entities from the following sentence:
It should be possible for a user to preview a mail-merge document before printing or emailing and edit the merged document if required

### Assistant:

EFFECT_1: a user to preview a mail-merge document
CAUSE_1: printing
CAUSE_2: emailing
CAUSE_3: edit the merged document
NEGATION: before
AND: and
OR: or
NOT_RELEVANT: if required
KEYWORD: for
VARIABLE: the merged document
CONDITION: edit

