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 DIRCHANGE()
 Change the current DOS directory
------------------------------------------------------------------------------
 Syntax

     DIRCHANGE(<cDir>) --> nSuccess

 Arguments

     <cDir> is the name of the directory to change to, including the
     drive.

 Returns

     DIRCHANGE() returns 0 if successful; -1 if there is an argument error.
     Otherwise, DIRCHANGE() returns the DOS error code.

 Description

     DIRCHANGE() changes the current DOS directory.  This function may also
     be used to determine whether or not a directory exists.

 Examples

     .  The following example attempts to change to the "c:\dos"
        directory.  If it is unsuccessful, an error message is displayed.

        nResult :=  DIRCHANGE("c:\dos")

        IF nResult != 0
           ? "Cannot change directory. "
           DO CASE
              CASE nResult == 3
                 ?? "Directory does not exist."
              CASE nResult == 5
                 ?? "Access to directory denied."
           END
           BREAK
        ENDIF

       You may also use something like this:

        DIRCHANGE( "..\..\test" )

 Files   Library is EXTEND.LIB.