+ <!-- Default screen margins, per the Android Design guidelines. -->
+ <dimen name="activity_horizontal_margin">@dimen/standard_padding</dimen>
+ <dimen name="activity_vertical_margin">@dimen/standard_padding</dimen>
+ <dimen name="nav_drawer_width">260dp</dimen>
+
+ <dimen name="file_icon_size">32dp</dimen>