Canonical EXI - 4.3.1 and 4.3.2

Hi,

Section 4.3.1 says:

"Canonical EXI MUST exclude extraneous CH ("") events unless they are required 
 by the EXI grammar (see 4.3.2 Empty element content)."

However, section 4.3.2 does not seem to describe such a situation very well. 
All what 4.3.2 describes seems to be again about removing extraneous CH ("").

Thank you,

Takuki Kamiya
Fujitsu Laboratories of America