These symbols are the “official” symbols used in maps for Star Frontiers adventures featured in White Dwarf, Ares, and Space Gamer magazines. These symbols were intended for marking maps within Frontier Sector space.
STAR FRONTIERS adventures take place in an area of space called the Frontier Sector, or simply the Frontier. The Frontier contains 17 inhabited star systems, with a total of 23 colonized planets. Some of these planets have been claimed and settled by only one of the four races, while others were set up in cooperation and have mixed populations.
Besides these settled areas, the sector contains 21 unexplored star systems that could have habitable (or inhabited) planets. There are many moons, asteroid belts and uninhabited planets that are largely ignored in the day-to-day business of earning a living in the Frontier.