to give emphasis to (something)

stress, give priority to

to add pictures, diagrams, photographs etc to (something); to explain (something) by using examples etc

demonstrate, exemplify

to do something, perform, in an exaggerated way

be dramatic

to put (marks, e.g. . , ; : ? !) into a piece of writing; to interrupt (a speech etc) from time to time

lay stress on

a line drawn under a word or words; to emphasize (a remark, warning etc)

emphasize; mark