DW> 1ø) Is there any option or internal fonction to create tables?

no.
DW> At this time, I use this way:
that looks like the best way... I hope you have a large environment.

DW> 2ø) For executable definition, the command is: `Set .tst=Edit`
DW>
DW> If I launch a `blurp[.tst]`, 4DOS will execute `Edit blurp` right?

actually `Edit D:\path\blurp.txt`

c:\>set .sys=echo^config^ansi

C:\CONFIG.SYS
C:\DOS\ANSI.SYS

DW> I tried `Set .ext=Edit %& something_else` but it didn't work..

use an alias. (you need the "call")

set .tst=CALL a_macro
alias a_macro `Edit %& something_else`
                        

--- EzyQwk V1.20 01fa018d