[Info-vax] Using MRU

[Syltrem]

I upgraded the Alpha version to 1.8B and that should support cartridges 
names (barcode labels) as per documentation

As found in the MRU18B_IGUIDE.TXT :
The LOAD command moves a cartridge from a slot into a drive.

LOAD { SLOT slot_number } [ DRIVE drive_number ] [ ROBOT robot_name ] [ CART 
cartridge_name ]

Can I load a cartridge directly by name or must I always know what slot it 
resides in ? It seems to me that naming the cartridge is much easier; I 
don't really care what slot it's in...

     (1)
$ robot load drive 0 cart "abc" robot gka0
The LOAD command requires a Slot parameter.
%ROBOT-E-CLI_EXPECTS_ARG, CLI: Parameter expects argument

     (2)
$ robot load drive 0 cart "abc" robot gka0 slot 2
LOAD failed on gka0: Cartridge invalid.
%ROBOT-E-CART_INVALID, Cartridge invalid

I understand the result of my 2nd command as I don't have an "abc" cartridge 
and the doc also says that if you specify both SLOT and CART parameters, MRU 
will check that the expected cartridge is in the specified slot before 
taking action upon it.

But how about command 1 ? Isn't that supposed to work directly without me 
having to do a FIND to start with ?
Especially when FIND will only display the slot on the screen, I have to 
redirect output to find out what slot it is in DCL, etc. Not very pratical.

Same for UNLOAD, it's not important to know in what slot the cassette will 
go, if I can always retrieve it by name (after all, that's why we use 
barcodes to name the cartridges...)

I'm not sure what's the difference in the syntax from dthe doc, between  {} 
and [], what is optional and what is not.
I would like to LOAD and UNLOAD cartridges by name, without bothering with 
slot numbers which are not important.

Thanks
Syltrem