- * - Simple serial, file, and network I/O abstractions
- * - Code to calculate magnetic variation.
- * - A variety of coordinate conversion, vector, matrix type math routines.
- * - An abstraction to hide platform dependent path naming schemes.
+ * (SGEphemeris)
+ *
+ * - Code to render a realistic sky dome, cloud layers, sun, moon,
+ * stars, and planets all with realistic day/night/sunset/sunrise
+ * effects. Includes things like correct moon phase, textured moon,
+ * sun halo, etc. (SGSky is built on top of SGCloudLayer ...)
+ *
+ * - Simple serial (SGSerial), file (SGFile), socket (SGSocket), and
+ * UDP socket (SGSocketUDP) I/O abstractions.
+ *
+ * - Code to calculate magnetic variation. (SGMagVar)
+ *
+ * - A variety of classes and functions for interpolation tables
+ * (SGInterpTable), least squares computation (leastsqs.hxx), 3D
+ * point/vectors (Point3D), 3D polar math and conversions (polar3d.hxx),
+ * WGS-84 math and conversions (sg_geodesy.hxx), random number abstraction
+ * (sg_random.h), STL conglomerates for common list types (sg_types.hxx),
+ * and other vector and linear algebra routines (vector.hxx)
+ *
+ * - An abstraction to hide platform dependent path naming schemes. (SGPath)
+ *