The following two formats both work:
/interface wifi access-list export
/interface/wifi/access-list/export
Is there a preferred syntax? I have a dim memory that the first format is the original syntax and that the “/” separated was added in v7?
Supplemental question is that if one prefers to use the second format, then there should be an option for export that defines the slash format?
better without useless "/", and the export itself, like you evidence, do not use useless "/"
since v6 is still used (ignoring that i smore stable),
when I write script I use spaces for be compatible on both versions.
If the command do not exist on v6, is another thing.
What then was the logic for introducing the “/” format?
IMO / is used to distinct config sections from command arguments for better cognitive readability or just for ones who are used to / (or \) as directory separators in OS shells where in this case ROS config sections are represented as direcoties in ROS shell.
For eg. if you point terminal to /system script job, prompt will actuall separate sections with / which in this case will be [<user>@<device_name>] /system/script/job>.
Personally I prefer such syntax in my scripts /<section>/<sub-section>/cmd <arg1> <arg2>…
Good point that auto-complete includes the “/” which infers that Mikrotik are encouraging that format? Maybe switch on export to use the “/” character optionally? Although I’d still like to know the thinking behind the change in syntax.
I guess export still uses space for backward compatibility.
Exactly, like users must do until a true working v7 exist, v6 is only the long-term for production.
Not all frills on v7 are for productions, are just tous for play at home.
I have v7 on some edge routers, but after too much kernel failure, mysterious reboot & co.
I search again v6 machine and I've made a decent supply of them, which I hope will be enough until they make a truly stable v7.
I’m not in the big installation market - I work in consumer and SOHO. One of my sites has an ancient RB2011UiAS in a very busy bar with four cAP ac APs. Just noticed that it’s been up for nearly a year on v7 
I think a switch on export would be helpful in the transition to “/” separator?