Literals

Strings

A Part 21 string is single-quoted; a doubled quote '' inserts a quote into the string (clause 6.3.3, numbered 6.4.3 in the third edition).

strings

#1= A('a simple string');
#2= A('it''s quoted');
#3= A('a string with a \X2\00E5\X0\ rune');
#4= A('');

Binary literals

A double-quoted hex literal is a binary value. Its first hexadecimal digit records how many zero bits were filled in to reach a whole number of octets, so it is 0 to 3, and the rest of the digits are the value; the empty binary is "0" (clause 6.3.6, which the third edition numbers 6.4.6):

binary literals

#5= BINARY_HOLDER("0F3A");
#6= BINARY_HOLDER("00FF");
#7= BINARY_HOLDER("00000000");
#8= BINARY_HOLDER("0");

In context:

literals in context

#1= PROPERTY_SINGLE_VALUE('Name',$,STRING('value'));
#2= BINARY_HOLDER("0F3A");
#3= A('name','');

The '' escape and the binary "..." hex form are handled by the same literal rules as the fixture sample.p21.