a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS162 [Section] 9.4 [Statement text] 
The disallowed tags listed below are those tags that impact other Portlets or may even break the entire aggregated page. Inclusion of such a tag invalidates the whole markup fragment, which the Consumer MAY replace with an error message.
WSRP v2.0 Specification
Statement text