@ (nested script)
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  Purpose : Specify the name of a script file

  Syntax  : @<scriptname>

  Example :  # Process the link script 'Myscript' here
                 @Myscript

  Blinker supports nested script files of any size to a depth of 5 levels.
  The processing of nested script files is similar to a program function
  call:  when Blinker encounters a nested script command, the current
  script file is suspended, the second script is processed, and then
  Blinker returns to the first script and resumes processing.

  When searching for a script, Blinker will first look in the current
  directory, and then in the path specified in the LIB environment
  variable. This will allow frequently used scripts which are rarely
  modified, (such as scripts for overlaying a particular library) to be
  stored in a common directory, for convenience.