By default, command button labels in MAF AMX display as a single line. But what if you need to reduce the width of a command component while still going with a longer label on it? In this case Cascading Style Sheet (CSS) comes in handy. You can create a quick test case yourself and copy & paste the page code below

<amx:commandButton id="c1" text="one two three four five six seven eight nine ten eleven twelve thirteen"
     inlineStyle="word-break:break-word; white-space: normal; width:100px; 
                  height:150px; max-height:0%; max-width:100px;">
</amx:commandButton>

Note the inlineStyle property setting, which not only determines where and how to break the label string but also sets the max width and height for the component. If you like this CSS setting to be more central, you can add it to a MAF skin file so it is applied to all buttons, or just to buttons that reference a specific style class