These options set spacing between letters and vertical spacing between lines of text formatted in the style. 这些选项设置格式化为此样式的文本行之间的字符间隔和垂直间隔。
On a typewriter, the relative movement of one character space between the paper carrier and typing position parallel to the typing line. 打字机上，托纸架和打印位置之间平行于打印行的一个字符间隔的相对位移。
