Further Capabilities

• functions for the determination of Galois groups of rational polynomials,
  
  
• packages AClib, Cryst, CrystCat and Carat for crystallographic and almost crystallographic groups,
  
  
• a package ParGAP for parallel computations with GAP,
  
  
• a graphical user interface XGAP that permits, for example, the display of subgroup lattices.