Summary EDK II Meta-Data Expression Syntax Specification 1 Introduction 1.1 Overview 1.2 Related Information 1.3 Terms 1.4 Target Audience 1.5 Conventions Used in this Document 2 Expression Overview 2.1 Constraints and Semantics 3 Expression Format 3.1 Data Field Expression 3.2 Conditional Directive Expressions Appendix A ABNF Syntax A.1 Data Field Expression ABNF A.2 Conditional Directive Expression ABNF Tables Table 1 Font Conventions Table 2 EBNF Conventions