Welcome to the website of Bob and Lisa Lyons!

Some highlights:

• Tip Pal - a palindromic tip calculator
• Flip Your Lid - a simplified Rubik's Cube game
• The ABC's of Unicode - an in-depth article about Unicode and UTF-8
• The Difficulty of Fixing Python Indentation Errors - an article that examines the difficulty of fixing indentation errors in Python programs. We prove that the problem is NP-hard.