playwright-test is the official test runner of playwright and is especially made for end-to-end testing.

A fiber is a particularly lightweight kernel thread scheduler dependent thread of execution using co-operative multitasking.

The goal of JavaMelody is to monitor Java or Java EE application servers in QA and production environments

core.logic is a Clojure logic programming framework based on minikanren.

wkhtmltoimage is a program capable of converting HTML documents into images.

Almost everything in JavaScript is an object, which you can think of as sort of like associative arrays - objects contain named properties which can be accessed with obj.propName or obj['propName']. Each object has an internal property called prototype, which links to another object. The prototype object has a prototype object of its own, and so on – this is referred to as the prototype chain.

An UnsupportedClassVersionError is thrown when the Java Virtual Machine attempts to read a class file and determines that the major and minor version numbers in the file are not supported. The canonical answer about what is UnupportedClassVersionError and how to fix it: https://stackoverflow.com/questions/10382929/how-to-fix-java-lang-unsupportedclassversionerror-unsupported-major-minor-versi

Anything related to C or C++ standard library functions `fputs` (C) or `std::fputs` (C++). These functions are used to write a null-terminated string to an output stream.

The Template Method pattern is a design pattern that defines the program skeleton of an algorithm in a method, called a template method, which defers some steps to subclasses. It is one of the Gang of Four's behavioral design patterns.