Perl-Compatible Regular Expression Set

This behaviour activate question-type specific hints support in Interactive mode.

A question that could check student's response against several regular expressions and could give next character and next word hints. If you do not know what regular expression is, it could also work like Moodle Shortanswer question with hints, just choose "Moodle shortanswer" as notation and you could enter answers just like in shortanswer question type.

Formal languages block centralizes code for scanning and parsing of different languages. For now it is used by Preg and CorrectWriting question types, but other plugins can use it as well.

Abstract question type used in questions developed by POAS department of Volgograd State Technical University. Contains some generally useful question type code.

This is no penalties version of "Adaptive mode with hinting" behaviour, like core versions.

This is hinting behaviour using abstract hint interface, defined in poasquestion qtype. It is used by Preg and CorrectWriting question types for now, but due to object-oriented architecture it can be used by any other question type requiring advanced hinting.