JSF Tutorial 18 : JSF Ajax Execute and Render part 2

link of project shown in video is ...

jsf ajax "execute" attribute:

Evaluates to Collection String. This is a space separated list of client ids of components that will
participate in the "execute" portion of the Request Processing Lifecycle. If a literal is
For example, @this clientIdOne clientIdTwo.

jsf ajax "render" attribute:

Evaluates to Collection String. The clientIds of components that will participate in the "render"
portion of the Request Processing Lifecycle. If a literal is specified the identifiers
For example, @this clientIdOne clientIdTwo.