62f31996_L_View_Graphics___Face_Effects__Description
[Effect] cross [Arguments] tuple! [Description] 
Generate an X cross image. (Note: see draw effect to get a better X.) This is used for check boxes. An optional tuple! can be used to specify the color of the cross, otherwise the edge color will be used. The cross is proportional to the size of the face.
REBOL/View Graphics - Face Effects
Description