2.1.12 [W3C-EPUB3] Section 4.4.2.4.2. Allowed values

V0016: The rendition:spread property is not supported and is ignored

The specification states:

 › 4.4.2.4 The rendition:spread Property
  
 › 4.4.2.4.2 Allowed values
  
 The following values are defined for use with the rendition:spread property:

EdgeHTML Mode

The rendition:spread property is not supported and is ignored.