DNA-directed RNA polymerase-associated factor required for the transcription of viral early genes as well as for transcription termination. Within minutes after virus entry, recruits the core RNA polymerase, the early transcription factor (ETF) and other enzymes needed for transcription initiation, elongation, and termination thereby allowing synthesis of early mRNAs which are extruded through pores in the core particle. Recruits the multifunctional J3 protein, with poly(A) polymerase-stimulatory, cap nucleoside-2'-O-methyltransferase, and transcription elongation activities. Interacts with NPH-I, a DNA-dependent ATPase required for the termination of early transcripts. Acts as a transcription termination factor by binding, together with the capping enzyme/VTF, to the termination motif 5'-UUUUUNU-3' in the nascent mRNA. Involved as well in the packaging of RNA polymerase and other components needed for early transcription in assembling virus particles. Part of the early transcription complex composed of ETF, RAP94, and the DNA-directed RNA polymerase. Interacts (via N-terminus) with NPH-I. Interacts with J3. Interacts with ETF heterodimer. All the enzymes and other proteins required to synthesize early mRNAs are packaged within the virion core along with the DNA genome. Expressed in the late phase of the viral replicative cycle. Interacts with ETF via its N-terminus and with DNA-directed RNA polymerase via its C-terminus. Belongs to the poxviridae protein RAP94 family.