noWhiteSpace()
pexp()
step:
tail:
NodeTest()
ERROR: unknown axis for parseComment
ERROR: unknown axis for parseText
ERROR: unknown axis for parseProcessingInstruction
ERROR: unknown axis for parseNode
ERROR: unknown axis for parseProcessingInstructionLiteral
ERROR: unknown axis for parseNameTestColonStar
ERROR: unknown axis for parseNameTestStar
ERROR: unknown axis for parseNameTest
ERROR: empty predicate expression
ERROR: unknown predicate expression