The 8 Most Common Expect Errors

A good place to start my workday of Expect scripting: The 8 most common errors:

1. Have you mis-spelt a variable name?
2. Have you mis-spelt a command name?
3. Have you used a $ when setting a variable, or left one off when using the contents of a variable?
4. Do your brackets balance?
5. Have you left spaces in the right places?
6. Have you added a new line in the middle of a command and forgotten the \ on the end of all lines except the last?
7. Do you need \ protection on anything?
8. Have you got () {} or [] mixed up?

I'll keep those in mind.