@ (nested script)             Specify name of script file
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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.