REXX is used mainly in IBM servers/OS zSeries(z/OS), iSeries(AS/400), pSeries(AIX) and xSeries(OS/2). Also obj-rex will be open source very soon: http://www-306.ibm.com/software/awdtools/obj-rex http://www-306.ibm.com/fcgi-bin/common/ssi/ssialias?infotype=an&subtype=ca&appname=Demonstration&htmlfid=897/ENUS904-207 -thanks-
This looks like something better suited for Extras for now.
Regina is in FC-devel but it's not included in i386 because it's "ExclusiveArch: s390 s390x". It compiles and runs ok on i386, bug or feature ?
Honestly, I don't see any overriding reason why it's in the s390 tree.