drscheme:get/extend:extend-unit-frame in DrScheme Tools Functions

• (drscheme:get/extend:extend-unit-frame mixin) -> void?
     mixin : (make-mixin-contract drscheme:unit:frame%)

  
  

• (drscheme:get/extend:extend-unit-frame mixin before?) -> void?
     mixin : (make-mixin-contract drscheme:unit:frame%)
     before? : boolean?

  This is the frame that implements the main drscheme window.

  The argument, before, controls if the mixin is applied before or after already installed mixins. If unsupplied, this is the same as supplying #f.