Prompt Title: Coding identifier naming rules.

When it comes to naming conventions for identifiers, there are a few common approaches that programmers tend to use:

1. CamelCase: This convention involves starting the first word of an identifier with a lowercase letter, and then capitalizing the first letter of each subsequent word. For example: firstName, totalPrice, or accountNumber.

2. PascalCase: This convention is similar to CamelCase, but the first letter of the first word is capitalized as well. For example: FirstName, TotalPrice, or AccountNumber.

3. snake_case: This convention involves using all lowercase letters and separating words with underscores. For example: first_name, total_price, or account_number.

4. kebab-case: This convention is similar to snake_case, but instead of underscores, words are separated with hyphens. For example: first-name, total-price, or account-number.

It's important to note that different programming languages and communities may have their own preferred conventions, so it's a good idea to research and follow the conventions that are standard for your specific situation. Additionally, consistent and descriptive naming is more important than following a particular convention exactly, so choose a convention that works for you and stick to it throughout your code.