How do you view all available parameters/variables for a page using Page Composer?

Summary:

I am customising recruiting pages for Oracle HCM using Page Composer in a sandbox. I would like to be able to view all possible binding parameters/variables available for a page. I am aware that in Expression Editor there are drop down menus but not everything is shown here and the Page Parameters show up empty.

I would like to see all of the below available for a page:

• bindings
• pageFlowScope parameters
• backingBeanScope parameters
• system variables
• security context functions such as #{securityContext.userInRole['roleList']}  and #{securityContext.userGrantedPermission['permission']}

Is there documentation on all available parameters/variables for each page in Oracle HCM, or is this accessible somewhere in Oracle Fusion?