anchor.diff:    -- example showing a "raw" `Servlet` returning plaintext content
   * link:spring-boot-sample-ws[spring-boot-sample-ws]
     -- A simple contract-first SOAP web service with Spring Web Services
  -* link:spring-boot-sample-websocket[spring-boot-sample-websocket]
  -  -- A web application with Websocket support on the client and server
  +* link:spring-boot-sample-websocket-jetty[spring-boot-sample-websocket-jetty]
  +  -- A web application with Websocket support on Jetty server
  +* link:spring-boot-sample-websocket-tomcat[spring-boot-sample-websocket-tomcat]
  +  -- A web application with Websocket support on Tomcat server
  +* link:spring-boot-sample-websocket-undertow[spring-boot-sample-websocket-undertow]
  +  -- A web application with Websocket support on Undertow server
   * link:spring-boot-sample-flyway[spring-boot-sample-flyway]
     -- Example showing database migrations with Flyway
   * link:spring-boot-sample-liquibase[spring-boot-sample-liquibase]
  
positive.code:   -- A web application using native Groovy templates
  * link:spring-boot-sample-web-jsp[spring-boot-sample-web-jsp]
    -- A web application using JSP templates
  * link:spring-boot-sample-web-tomcat8-jsp[spring-boot-sample-tomcat8-jsp]
    -- A web application using JSP templates with Tomcat 8
  * link:spring-boot-sample-web-tomcat-multi-connectors[spring-boot-sample-tomcat-multi-connectors]
    -- A web application using multiple connectors in tomcat, showing how to customize the Tomcat server
  * link:spring-boot-sample-web-secure[spring-boot-sample-web-secure]
    -- A web application with typical Security configuration enabling a login form
  
negative.code:   -- A production features sample with no web application
  * link:spring-boot-sample-actuator-log4j[spring-boot-sample-actuator-log4j]
    -- A production features sample using log4j for logging (instead of logback)
  * link:spring-boot-sample-cache[spring-boot-sample-cache]
    -- A web sample that uses Spring's cache abstraction
  * link:spring-boot-sample-web-ui[spring-boot-sample-web-ui]
    -- A thymeleaf web application
  