2.1.1 [PICSServices:1996] Detailed syntax of application/pics-service

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V0001:

The specification states:

 Transmit-names and quoted strings are case sensitive. Option names and other tokens 
 in the BNF grammar are case insensitive.

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Quoted strings are treated as case-insensitive.

V0002:

The specification states:

 The only service-option that may occur more than once in a single service 
 description is the extension option. Likewise, the only option that may occur more 
 than once as a default or as a category-option is extension. In each case, if the 
 extension option is supplied more than once, the quoted-URLs defining the 
 extensions must be distinct.

All Document Modes (All Versions)

Distinct quoted-URLs for multiple extensions are not enforced.

V0003:

The specification states:

 This specification requires the use of UTF-7 encoding to allow for the inclusion of 
 non-English description strings. For those rating systems and services that use 
 only the US-ASCII character set in their descriptive strings, UTF-7 allows direct 
 encoding of the following (printable) characters: a-z, A-Z, 0-9, '(),-
 ./:?!#$%&*;<=>@[]^_`{|} Notice that "+" is not included in this set, since it is 
 used by the UTF-7 encoding system.

All Document Modes (All Versions)

Only ratings (.rat) files that have been encoded in ANSI format are recognized.