V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
RCL Runtime Control LibraryThe Free On-line Dictionary of Computing (30 December 2018):
RCL Reduced Control Language. A simplified job control language for OS360, translated to IBM JCL. "Reduced Control Language for Non- Professional Users", K. Appel in Command Languages, C. Unger ed, N-H 1973.