spacing in area-container<%>

Gets or sets the spacing, in pixels, used between subareas in the container. For example, a vertical panel inserts this spacing between each pair of vertically aligned subareas (with no extra space at the top or bottom).

• (send an-area-container spacing) -> exact integer in [0, 1000]

  Returns the current spacing.

  
  

• (send an-area-container spacing spacing) -> void
     spacing : exact integer in [0, 1000]

  Sets the spacing.