Shaofei Cheng

http://ecmascript.cn#block860 和 LeftHandSideExpression

http://ecmascript.cn#block2292 CharacterEscapeSequence 0 [lookahead ∉ DecimalDigit] HexEscapeSequence UnicodeEscapeSequence 缩进需要调整

http://ecmascript.cn#block5 ISO/IEC 16262:2011 English should be separated from Chinese with space

http://ecmascript.cn#block120 opt opt should be within "sub" tag