MsrbEmmaPeriod
Import from: @xbbg/xnews, @xbbg/xnews/catalog
MsrbEmmaPeriod =
"Today"|"Yesterday"|"ThisWeek"|"LastWeek"
Defined in: src/sources/msrbemma.urls.ts (declaration: sources/msrbemma.urls.d.ts:3)
EMMA's four fixed posting windows for the continuing-disclosure feed.
