By default, arguments can be given only once.
However, arguments with the
multipleproperty set to
truecan be given multiple times, and each time the argument is given, the new value is appended to a list containing all the values.
An example is the
Internally, multiple is implemented by creating a new level in the abstract syntax tree, and storing each argument separately under a newly generated dummy nodes as in:
AstNode: H AstArgument: child AstNode: Comment AstArgument: content AstNode: plaintext AstNode: x AstNode: Comment AstArgument: content AstNode: plaintext AstNode: x