GKS Version 1.0 for RT-11. Dennis V. Jensen 258H Development Ames Laboratory ISU/USDOE Ames, Iowa 50011-3020 phone: 515-294-7909 This is a graphics subroutine library compliant with the GKS standard at level MA, which is a minimal implementation. All of the source code (primarily in macro) and all of the documents (including the Runoff files) are included in this the second release of GKS from the Ames Lab. As distributed, it is ready to link with an RT-11 Fortran 77 application. It includes device drivers for the Tek 4107 terminal, the Visual 550 terminal, and the HP 7475 plotter. GKS10A.Dsk 88 files, 760 blocks (source code and libraries). GKS10B.Dsk 22 files, 610 blocks (documentation).