OVERLAY
------------------------------------------------------------------------------

  Purpose : Specify which segment classes are to be overlaid

  Syntax  : OVERLAY <classname> [,<classname> ...]

  Default : The class of the first segment encountered in the link process.

  Example : OVERLAY CODE

  The OVERLAY command is used to specify to the linker which segment class
  or classes from the object files are to be placed in the overlay
  sections.

  The overlay class defaults to the first segment class processed during
  linking and is displayed to the screen at the end of the first pass when
  VERBOSE mode is selected. It should be unnecessary to use this command
  for high level language compilers as they automatically place all code
  segments at the start of the .OBJ.

  Assembler programmers have complete control over the segment classes and
  their order in the .OBJ files, so they may have need of the OVERLAY
  command to force overlaying of code not in segments of class CODE.

  Blinker only supports dynamic overlaying of program code, so use this
  command with care, and do not attempt to overlay data segments.