ALT+B will allow you to adjust the number of silvers you have in your bankroll.
ALT+I will give you one of any item you want, as long as you know its number:
1 = Silver Coin
2 = Gold Coin
3 = Food Ration
4 = Mandrake Root
5 = Brass Key
6 = Broadsword
7 = Dagger
8 = Leather Armor
9 = Shield
10 = Piece of Paper
11 = Small Apple
12 = Vegetable
13 = Glowing Gem
14 = Alabaster Vase
15 = Gold Candelabra
16 = Music Box
17 = Silver Candlestick
18 = String of Pearls
19 = Gold Ring
20 = Spirea Seed
21 = Small Rock
22 = Flower
23 = Lock Pick
24 = Thieves' Tool Kit
25 = Thieves' Guild License
26 = Empty Flask
27 = Handful of Green Fur
28 = Flask of Fairy Dust
29 = Flask of Water
30 = Mushroom
31 = Cheetaur Claw
32 = Troll Beard
33 = Chainmail Armor
34 = Healing Potion
35 = Potion of Magic Power
36 = Vigor Potion
37 = *blank*
38 = Dispel Potion
39 = Undead Unguent
40 = Magic Mirror
41 = Magic Acorn
ATL+K will allow you to adjust your skills. You'll be given a number prompt to pick the skill, and another to pick its level:
0 = Strength
1 = Intelligence
2 = Agility
3 = Vitality
4 = Luck
5 = Weapon Use
6 = Parry
7 = Dodge
8 = Stealth
9 = Lockpicking
10 = Throwing
11 = Climbing
12 = Magic
13 = Health Points
14 = Stamina Points
15 = Mana Points
16 = Experience
17 = Skill in Open
18 = Skill in Detect Magic
19 = Skill in Trigger
20 = Skill in Dazzle
21 = Skill in Zap
22 = Skill in Calm
23 = Skill in Flame Dart
24 = Skill in Fetch
ALT+T will bring up a prompt that will teleport you to another location. I don't know all the numbers, and have no desire to learn them. You're on your own here. There's a good chance you'll get an OOPS error and will be kicked...
ALT+E will bring up a little tech window about Ego's (you) status. Your position, movement state, and other junk.
ALT+S will bring up windows about the sprites in the area.
ALT+P will alter the colors so that you can see what is in each level of the foreground and background.
ALT+X will give your Hero 80 for every stat.