a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS029 [Section] 4.1.24 [Statement text] 
customWindowStateDescriptions: An array of ItemDescription structures as defined in Section 4.1.9. This array MUST include an entry for any custom window state the Producer supports.
WSRP v2.0 Specification
Statement text