Use title case?

[xfq]

Most of our documents use title case:

See details

• Internationalization Glossary
• Strings on the Web: Language and Direction Metadata
• Internationalization Best Practices for Spec Developers
• Language Tags and Locale Identifiers for the World Wide Web
• Best Practices for XML Internationalization
• Chinese Layout Gap Analysis
• Adlam Gap Analysis
• Arabic and Persian Gap Analysis
• Bengali Gap Analysis
• Devanagari Gap Analysis
• Ethiopic Layout Gap Analysis
• Gujarati Gap Analysis
• Japanese Gap Analysis
• Modern Greek Gap Analysis
• N’Ko Gap Analysis
• Perso-arabic Kashmiri Gap Analysis
• Tamil Gap Analysis
• Uighur Gap Analysis
• Gurmukhi Gap Analysis
• Catalan Gap Analysis
• Hebrew Gap Analysis
• Javanese Script Gap Analysis
• Korean Layout Gap Analysis
• Mongolian Gap Analysis
• Cherokee Gap Analysis
• Khmer Gap Analysis
• Lao Gap Analysis
• Thai Gap Analysis
• Dutch Gap Analysis
• French Gap Analysis
• Georgian Gap Analysis
• German Gap Analysis
• Hungarian Gap Analysis
• Inuktitut & Cree Gap Analysis
• Osage Gap Analysis
• Tibetan Gap Analysis
• Text Layout Requirements
• Arabic & Persian Layout Requirements
• Mongolian Layout Requirements
• Requirements for Chinese Text Layout
• N'Ko Layout Requirements
• Gurmukhi Layout Requirements
• Requirements for Japanese Text Layout
• Requirements for Tibetan Text Layout and Typography
• Tamil Layout Requirements
• Rules for Simple Placement of Japanese Ruby
• Indic Layout Requirements
• Requirements for Hangul Text Layout and Typography
• Ethiopic Layout Requirements

But this document uses sentence case:

• Language enablement index

Should we standardise the capitalisation?

[Myndex]

I prefer Title Case as per the Chicago Manual of Style.

I discuss the topic with additional references in the article "Hats Off to All Caps"