Were you unable to buy any food from the miscellaneous shopkeeper because he wasn't selling it or you didn't have the money? Are you saying shopkeepers should have a greater selection of items in general? "Weapons&Armor" shops do exist, by the way.

Shops for which it would be pointless to list unidentified items (ie Potions) do in fact always sell identified items. Certain other types of shops, such as general stores or food stores, do not sell identified items. That's just how it goes :) On the plus side, unidentified items are (usually) worth less to shopkeepers and players alike, so you get a better price if you buy an unidentified loaf of bread compared to an identified one.

By the way, in Nethack, EVERY item sold by a shopkeeper is unidentified. Just thought I'd throw that out there in case you were unaware.

Saving IS only possible on floor transitions. The "Save & Quit" option basically just ends the game without deleting the autosave ;) Also, we only added saving in a patch months after the game originally came out because older gamers with more life commitments were having trouble finding the time to play the game to completion. We didn't want to exclude those people from having a good time, so it was only then that we finally decided to add a save system. So in other words, on principle, I agree with you. But there are already numerous ways to exploit the game and break your experience (eg with the very well-documented cheat codes) so it doesn't really matter at this point.

Both of you may be pleased to know there is a hotkey you can use to appraise items in your inventory. Just hold Shift + Right-click to appraise. Sorry this isn't documented that well, we literally just added it to that version of the game in response to similar complaints that it was too easy to mess up and equip something when you meant to appraise it.

The first digit actually refers to the limb number. Generally you don't want to change that.

The second digit refers to the X axis, which is forward/backward in local space.

The third digit refers to the Y axis, which is right/left in local space.

The fourth digit refers to the Z axis, which is up/down in local space.

Bear in mind: changing these values will change the limb's point of origin, so if the limb rotates, you may find it moving quite a bit more than you expect!