Parse a problem from a character stream.
Make sure that the current settings frame contains a local copy of
Pop a frame from the settings stack.
Add a new frame to the settings stack; this in particular affects the
(Changed in version 2.9.0) The
p0 call-by-name arguments is evaluated at most once per constructed Parser object, instead of on every need that arises during parsing.
Erase all stored information.
(Changed in version 2.10.0)
stringLiteral allows escaping single and double quotes, but not forward slashes any longer.
Comments are considered as whitespace and ignored right away