intro
set
introductively
prelude
prooemion
reintroduce
re-introduce
introductorily
premise
cointroduce
get onto
prologue
debut
preface
proemium
introductory
prefatorial
prefatory
curtain-raise
entrée
bring out
incidentally
apropos
by the bye
presentation
by the way
usher in
pipe-opener
stabilitate
invite
trigger
induct
reintroduction
make the first move
raise
preprovide
illustratory
prefatial
illustrational
come up to
draw in
pregiven
institution
annunciative
presentatively
invitational
speak to
breed
proem
make someone's acquaintance