Is it possible to flip tiles or combos, either horizontally or vertically? I can't find any option to do so.
Flipping tiles
Press H for Horizontal, V for vertical, and R to rotate the tile 90 degrees to the right. Shift+R makes it 90 degrees to the left.
For more hotkeys, you could check out my semioutdated hotkeys guide on AlphaDawg's site..let me find it..
You can find it here:
http://www.casadealphadawg.com/zc/zqtutorial/contributions/hotkeylist/index.html
Its out of date, and if anyone has any things to update for it, PM me and I'll see about getting AlphaDawg to update it with credit for you. ;P
Ah. I guess there are some things that can only be used with hotkeys.