Affects Version/s: Darwin Information Typing Architecture (DITA) Version 1.3 CSPRD01
Fix Version/s: None
Component/s: Public reviews
I grant that you follow your practice consistently but given the growing adoption of DITA, it would look more professional to follow standard rules on capitalization of section headings.
For example (followed by suggested changes):
2.1.2 Basic concepts
-> Basic Concepts
22.214.171.124 Processing controlled attribute values
-> Processing Controlled Attribute Values
126.96.36.199.1 Example: How hierarchies defined in a subject scheme map affect filtering
-> Example: How Hierarchies Defined in a Subject Scheme Map Affect Filtering
The general rule being that all words are capitalized other than articles (a, an, the), the coordinating conjunctions (and, but, for, nor, or, so, and yet, prepositions and the infinitive marker to. (Harbrace 9b)
I normally would not mention this but it will improve the appearance of DITA 3.0 and should be a trivial effort for a capitalization algorithm.