Does XML indentation matter?

Related questions

1. Can white spaces can be preserved by XML?
2. What are XML files used for?
3. What is valid XML document?
4. What is whitespace in XML?
5. What is XML and use of XML?
6. Why XML is needed?
7. What is indent XML?
8. What is DTD XML?
9. Where XML is used in applications?
10. What are the features of XML?

Tags

1. #answer
2. #sometimes
3. #whitespace
4. #matter
5. #significant
6. #indentation
7. #whether
8. #longer
9. #meaning
10. #indent
11. #depends
12. #application
13. #documents
14. #processing
15. #contained
16. #which