Opens a document on the workstation
where the Windows™ front end
runs.
Context
  
- At any place in the program, but only after the first instruction
has displayed something on the front end
 
  
Syntax
  WINSHELLEXEC(
   filename STRING )
  RETURNING result INTEGER
 
- filename is the file to be opened on the front
end.
 
  
Usage
  The function opens a document on
the Windows  front end without
waiting.
 Important: This function is provided for
backward compatibility and  should be avoided to run your programs
with different sort of front-ends.  It must be called after the front-end
connection was established.