- This template creates a half-width text box with contents defined by the first placeholder parameter
- Optional parameters
- background:defaults to 'transparent' (parent's) but can be changed by defining 'BG=new color'
- margin:defaults to '1em 0 1em 1em' but can be changed by defining 'M=new margin'
- width:defaults to 49% but can be changed by defining 'M=new width'