International button symbols?

Actually, the reason I don't want to use TEXT is that for localization in the future, it might take more than 3-4 characters and there is very little screen real-estate in my 480x320 frame. In fact, it's like I have room for total of 4-6 characters to be used among 3 buttons. If I can use a well-known symbol, such as the "i" for information things work a little better.

Apple's "info" button is about 18 pixels for the circle and a bit more (I forget how big) for the surrounding glow area. My display area for status text and buttons is 480x32, with only 96 pixels for all 3 buttons. Leaving borders and not squeezing the icons/buttons so close together doesn't lend itself for much text. I'm thinking of putting "i" in the lower right, undo in the lower left and restart near the center, next to the count indicator labels, so it's understandable hitting that button resets the counters to 000.

I'm considering a symbol with a dot in the middle of a ring, a refresh symbol with a circular dotted arrow, a "power" button (broken circle with a vertical line), and a pair or trio of arrows making a circular image. I also need an UNDO, so I don't want the reset to look much at all like undo. If there is an international symbol, then great, else I'll go with whatever looks nice from the above selection, possibly using photoshop myself to modify the image.

I was considering just pasting an "r" or "R" over the "i" symbol and let the highlight from the "i" make it look as though it was a bona fide system icon. Which is where my question about going against the HIG. After rereading that, I see no reason why Apple would reject my app for doing so.

An app I've played with from the App Store uses it's own symbols, a stylized "i", a gear, and a star for "info", "config", and "new"/"next". The version I have doesn't have an undo. I spent most of yesterday scouring the internet looking for ideas, and I have a also collection of roadsigns, but none of those seems reasonable to use for a reset.

I'm not sure a big red button is good either, as that's more of an emergency, and in my game's case, it's more of a, oops I made enough mistakes and trapped myself, just let me start this scene over.

Right now, my app moves the pieces by detecting touches. I'm deciding on adding flick/short-move in the proper direction to act as directional clicks to give people a little more room to make moves, so putting the buttons that get used the most (undo and reset) at left and center (and not left and right, only because right is better for info IMHO) should work. I thought for a moment to put them along the right side with reset in the middle, close to the home button on the iPod/iPhone, but thought it looked a little tacky and unbalanced. If my app worked in portrait mode, it might be OK.

I've done some scouting, and accepted the pointers here and am deciding on using some part of one or more of the following set of images for RESET, UNDO and NEXT. You can see what my choices are at: http://reststop.homeip.net/dev/resets.png

I doubt that I'll use the Windows RESET, but am leaning toward using one of the REFRESH (dotted circle going clockwise or ccw more likely. Then, I realized that staring me in the face on the Console window for XCode is a little green RESET. If it works for Apple, I might as well clone it, turning it white on black since my background is a black starfield before any pieces are added. (That's why the samples have some black on white and some white on black to see how they look). I thought about an iPhone home button, but figured that's not obvious enough for a reset.

Undo is a little more difficult and I'm leaning towards one that has 3 curved arrows making a circle, or a stylized BACK arrow. IF I make a NEXT button on the playing field, I may go with the FastForward style symbol.

I'm surprised there are not more references to these on the web. I found two pretty good icon/button sites with a bunch of free professionally done icons. Not so much good looking buttons.