0dd0b15f_e_Documentation__Customization__OPTION_ATTRIBUTE
[DATATYPE] integer [DESCRIPTION] The number of feed items to display per-feed (e.g. setting this to 3 will only merge 3 items from each feed). Only works when merging multiple feeds and obeys the items setting. [OPTION/ATTRIBUTE] 
items_per_feed
SimplePie Documentation: Customization
OPTION/ATTRIBUTE