action class is a part of controller or model; and what about formBean

[Arindam Rajbanshi]

i am doing struts 1.2 . Please tell me action is a part of controller or
model.
and formbean is a part of controller or model. even in the apache document
http://struts.apache.org/1.x/userGuide/index.html
tehy mentionde bormbean in Building Model Components   and  Building
Controller Components in two places and action in  Building Controller
Components
please clear my doubt.