Makes the selected text italic. If the cursor is in a word, the entire word is made italic. If the selection or word is already italic, the formatting is removed.
将选定的文本变为斜体。如果光标位于某个字词中，则整个字词将变为斜体。如果选择的文字或光标所在的字词已经是斜体，则取消斜体。