From Just Solve the File Format Problem
Dynamic Publisher is a desktop publishing application for the MSX2 computer system. It was published in 1987 by Radarsoft.
.pct files are 'screen' files and begin with ASCII "
DYNAMIC PUBLISHER SCREEN".
.fnt files are 'font' files and begin with ASCII "
DYNAMIC PUBLISHER FONT".
.stp files are 'stamp' files.