Form rendering The section explains the layout rules to render forms on graphical front-ends. Form rendering basicsGet the essentials about form rendering.Character encoding in .perThe character encoding used to edit and compile .per form specification files is defined by the current locale.Responsive LayoutForms can be designed to adapt to the front-end screen possibilities.Grid-based layoutA form file can define a grid-based layout within a tree of layout items.Front-end stored settingsFront-ends can store some layout properties of windows and form elements, for subsequent program executions.