Enhancements / Additions:

• Composite edges can be combined and used with composite faces.
• Algebraic structured surface meshes can be generated on composite faces having four sides.
• Internal changes to the way composite faces are created.  The composite U,V parametric distribution is computed only when the composite is created or when the topology is modified.  Prevously this was computed everytime the composite surface grid was generated.
• Significantly improved the speed and accuracy of writing the surface grid face normals.
• Changes to the VGEN interface:
  • Removed the 64-bit toggle
  • Added toggle to AFLR3 to use boundary conditions, boundary-layer initial spacing, and boundary-layer thickness specified in the tags file.
  • Local boundary-layer initial spacing and boundary-layer thickness values may only be applied to Groups.  Previously could be applied to geometric faces or composite faces.
• Improved the functionality of the blended sweep operation by utilizing an arc length interpolation rather than a uniform interpolation.
• Added alternate gui option, -gui 3, that makes the Group editor the as tall as the entire SolidMesh window.

• Corrected problem reading from the Save-State file boundary-layer initial spacing and boundary-layer thickness values that were applied to Groups.
• Corrected bug when to correctly apply the the volume grid boundary conditions reading a grid file (introduced in v5.61).
• Prevent the gui from starting up when using the command line options -version and -build.
• Corrected memory leaks when splitting a curve.
• Corrected fatal with sgridmerge when reading input grids.

• Trimming IGES-tagged periodic surfaces.