[HECnet] Links across volumes? (FILE/ENTER won't work)

[Sampsa Laine]

I just added a disk to solar, DKA100: and have created a directory called DKA100:[DECUSLIB] on it.

I want to link it into DKA0:[SYS0.DECNET] as DKA0:[SYS0.DECNET.DECUSLIB].

However:

$ SET FILE/ENTER=DKA0:[SYS0.DECNET]DECUSLIB.DIR;1 DKA100:[000000]DECUSLIB.DIR;1
%SET-E-ENTERR, error entering DKA100:[000000]DECUSLIB.DIR;1 as DKA0:[SYS0.DECNET]DECUSLIB.DIR;1
-RMS-F-DEV, error in device name or inappropriate device type for operation

Here's what's in DKA100:

$ dir dka100:[000000]

Directory DKA100:[000000]

000000.DIR;1                   0.50KB     7-FEB-2015 00:26:49.44
BACKUP.SYS;1                         0KB     7-FEB-2015 00:26:49.44
BADBLK.SYS;1                         0KB     7-FEB-2015 00:26:49.44
BADLOG.SYS;1                         0KB     7-FEB-2015 00:26:49.44
BITMAP.SYS;1                         5MB     7-FEB-2015 00:26:49.44
CONTIN.SYS;1                         0KB     7-FEB-2015 00:26:49.44
CORIMG.SYS;1                         0KB     7-FEB-2015 00:26:49.44
DECUSLIB.DIR;1               0.50KB     7-FEB-2015 00:27:23.74
INDEXF.SYS;1                   2.03MB     7-FEB-2015 00:26:49.44
SECURITY.SYS;1               0.50KB     7-FEB-2015 00:26:49.44
VOLSET.SYS;1                         0KB     7-FEB-2015 00:26:49.44

Total of 11 files, 7.03MB

On *NIX I'd use a symbolic link - what's the VMS solution?