The aspect of identity that the line "Spelling counts, but capitalization don't" best represents is written communication. In written communication, spelling is important because it ensures that words are correctly represented and understood by the reader. On the other hand, capitalization, or the use of uppercase letters, is not as crucial for understanding the meaning of a word or sentence. Capitalization is more related to grammar and style conventions rather than conveying the content or message itself.
To illustrate this, let's consider an example. Imagine you receive an email with a misspelled word, such as "acount" instead of "account." The misspelling might confuse or make it more difficult to understand the intended meaning of the message. However, if a word is not capitalized when it should be (e.g., "United States" instead of "United States"), the overall message can still be comprehended without much difficulty.
In summary, the line "Spelling counts, but capitalization doesn't" emphasizes the importance of accurate spelling for effective written communication while indicating that capitalization is not as critical for understanding the content.