Sets or returns an
int that represents the spacing between characters in a character run in twips. One twip = (1/20 pt) or ( 1/1440 in). This number can be negative (decreased spacing) or positive (increased spacing).
The minimum value is -1584 pts and the maximum value is 1584 pts. Values beyond this will be automatically adjusted.
MS Word equivalent: Format menu > Font... > Character spacing tab > Spacing: