Constant xmlParserOption_XML_PARSE_HUGE 

pub const xmlParserOption_XML_PARSE_HUGE: xmlParserOption = 524288;

Relax some internal limits.

Maximum size of text nodes, tags, comments, processing instructions, CDATA sections, entity values

normal: 10M huge: 1B

Maximum size of names, system literals, pubid literals

normal: 50K huge: 10M

Maximum nesting depth of elements

normal: 256 huge: 2048

Maximum nesting depth of entities

normal: 20 huge: 40