Classes for two-way FreeMarker-JSP integration. It contains both a JSP custom tag that allows embedding of FreeMarker templates inside JSP pages, as well as the infrastructure that allows JSP custom tags to be used inside FreeMarker templates.

Note that this is for the legacy "javax" Servlet/JSP API; for Jakarta (that is, in modern Servlet containers), use the `freemarker.ext.jakarta.jsp` package instead (since 2.3.33).