During the work on 4.9.2, new inscription functionality was added to the game, bag-related ones mostly.
Here's a quick overview of usage examples, which are from my level 46 Death Knight:
Torches
===
As he uses a torch of immunity, he needs to refuel it with normal torches. These are inscribed:
3 Wooden Torches {+,1} (with 2500 turns of light) {@F%!G4}
The "%" in "@F%" is a new shortcut that can be used when there is only 1 item slot in the whole inventory for this type of action (here the action is "F" aka "refill light").
If it is used, no number/tag (such as "F1") needs to be added after the command. Just pressing F will automatically pick the first item it finds that carries the "@F%" inscription.
The "!G4" artificially limits the stack size of the torches to 4. This means when I pick up more torches from a house or buy them from the general store, it will pick up at most as many as needed so that this inventory stack has 4 torches. Even if the general store (or a pile of torches on the ground) has eg 20 torches and you specify "a" to purchase all of them, your character will in fact only purchase (or pick up) enough to reach the stack size of 4.
So this is a quality of life inscription for fast and easy restocking.
Last but not least, if this pile has less than 4 torches in it, the inventory slot letter will be displayed in yellow (instead of the usual white) so in town I can quickly discern that this stack needs restocking.
Potion Belt
===
This item was finally implemented in 4.9.2. My belt looks like this:
a Potion belt {+,1} {!A0*U=}
The !U and != are known, they just turn this dark grey (!U) and if I ever hit a drop-item trap the != will make me auto-pickup it again.
The !A0 is new (it is specifically for bag items, a different inscription than the !A on activatable items):
!A by itself means "do not auto-stow items in this bag". I use this because I want to have my predefined potion set in this bag, which is heals, speed, resist, etc, but I don't want random potions I loot in the dungeon be placed in it, forcing me to empty it out in town each time.
However, when I pick up a potion that stacks with my potion set stuff, eg another potion of healing I find on the floor, I want it to get auto-stowed into the potion belt, where it then gets added to the stack of my heals.
For this the "0" variant is made (that's a zero, not the letter O. There is also a "1" variant):
"!A" means "do not auto-stow" and the "0" adds "...except if the new item stacks with items already inside it".
Aside from !A there are also !O (related to owning the items) and !S (related to store purchases) for auto-stowing control.
Potions of Healing (inside the potion belt):
===
40 Potions of Healing {+,16} {@q1!G40!W15d=}
Again, @q1 is known, != is for auto-pickup in case of drop-item traps, !d prevents dropping them accidentally.
New are !G40 and !W15:
!G40 is already explained above for the torches, it limits the stack size and displays the slot colour in yellow when the stack isn't maxed out.
!W15 is a "warning" trigger: Whenever my healing potion stack drops to 15 or less potions, I will get a warning sound effect played and the message "you have xxx potions" will be displayed in orange colour (instead of the usual white). Also, the inventory slot letter will change to orange too.
Example of newly added inscriptions (4.9.2)
Re: Example of newly added inscriptions (4.9.2)
One more thing, although these inscriptions are not new, but maybe it's a good place to write this here anyway - the concept of effective throwing weapons is kinda new:
On low level rogues that dual-wield daggers (main gauche is a dagger too) you can make use of them as effective throwing weapons (as mentioned in (5.2b) these are dagger-like weapons, all axe-type weapons, spears and tridents).
Inscribe both daggers (or main gauche): !=L@v1
and create a macro: \e)*tv1-
The macro creation can be done for you by utilizing the macro wizard via % z m j
The dagger inscription will cause the dagger to get auto-pickedup (!=) and also auto-equipped (!L for "auto-load").
For low level rogues this can be a quality of life macro to catch pesky runners that try to flee or keep their distance from you.
(Of course you can also carry a stack of throwing weapons in your inventory and just throw them straight from your inventory with the same kind of macro.)
On low level rogues that dual-wield daggers (main gauche is a dagger too) you can make use of them as effective throwing weapons (as mentioned in (5.2b) these are dagger-like weapons, all axe-type weapons, spears and tridents).
Inscribe both daggers (or main gauche): !=L@v1
and create a macro: \e)*tv1-
The macro creation can be done for you by utilizing the macro wizard via % z m j
The dagger inscription will cause the dagger to get auto-pickedup (!=) and also auto-equipped (!L for "auto-load").
For low level rogues this can be a quality of life macro to catch pesky runners that try to flee or keep their distance from you.
(Of course you can also carry a stack of throwing weapons in your inventory and just throw them straight from your inventory with the same kind of macro.)