Resize Box and Contents Proportionately

You can resize both a box and its con­tent pro­por­tion­al­ly by hold­ing down CTRL-SHIFT-OPT and either using the greater-than and less-than keys (to size the box down and up). The con­tent will dynam­i­cal­ly and pro­por­tion­al­ly scale in response to the change of the size of the box, and if you wait a moment until the lit­tle ‘sun­flower’ shows up, it becomes a live scale with preview.