Text Tool - Line Spacing and Tracking
Line Spacing
This control on the Text Tool Infobar changes the spacing between lines in text objects. It always affects entire lines of text, so if you change the line spacing of a selected section of a text object, it will affect all the lines the selection covers. For more information, see Changing the spacing between lines of text
Tracking
This control changes the spacing between the characters (letters) in text objects. For more information about changing the tracking, see Changing the tracking of text.
CTRL+ '+' Increase tracking (if a region is selected)
CTRL+ '-' Decrease tracking (if a region is selected)