Expandible Complex Control - Force Button Example - Search Form that can be expanded and collapsed but only if no data inside - collapse/expand button is a submit because of [form.expand.force-button]
Examples from "Common Particles Configuration" section of the form reference: form.position - the field with position defined take that position, the others take the places remained in declaration order
Expandible Complex Control - Example of a Search Form that can be expanded and collapsed but only if no data inside - expansion state may be controlled by JSP/Java code using form property [org.example.searchcontactadvanced]