The modeled page allows to define variables and input parameters by means of the icon 
.
Variables
The variables used in the pages are defined.
A new variable can be created from the icon 
. Operations can be performed on each line of variables. Click on the icons 
and 
perform a deletion or update respectively.
When defining a new variable or selecting an existing one, a panel with its information opens.
Parameters
The parameters used in the pages are defined.
A new parameter can be created from the icon . Operations can be performed on each line of parameters. Click on the icons and perform a deletion or update respectively.
When defining a new parameter or selecting an existing one, a panel with its information opens.
