For instance, entities are mapped to fonts and can change size in response to userfont selection.
例如，实体映射到字体，并且可以根据用户的字体选择来更改大小。
2
Consistency and flexibility: Be consistent with the user Settings of color, font, and so on.
一致性和灵活性：与颜色、字体等用户设置保持一致。
3
For any further alterations of the font size, we used the percentage unit to preserve proportionality if the browsers default font size is changed by the user.