1. The user mentions that dots are missing in expressions involving plus (+), minus (-), colon (:), and period (.) symbols. 2. This suggests the need to clarify or restore correct punctuation or notation in mathematical expressions. 3. If you have a specific math expression where dots or punctuation are missing, please provide the exact expression. 4. Proper punctuation in math expressions ensures clarity, such as distinguishing multiplication (\cdot) from decimal points in numbers, or correctly placing colons in ratios. 5. Without a specific expression, we recommend reviewing your math statements to ensure all punctuation marks are correctly placed for accurate interpretation.