Sets the line height, this is equivalent to the CSS line-height property and any valid value for this CSS property can be used.
Setting this property to null removes any existing value. Note that any inherited value
from a parent control may still apply.
nullremoves any existing value. Note that any inherited value from a parent control may still apply.Examples:
controls.TEXT1.lineHeight = "12px"; controls.TEXT1.setLineHeight("1.5em");