List of desupported built-in functions

Table 1. Desupported built-in functions
Function	Description
`FGL_FORMFIELD_GETOPTION()`	Returns attributes of a specified form field.
`FGL_GETUITYPE()`	Returns the type of the front-end.
`FGL_WINDOW_OPEN()`	Opens a new window with coordinates and size.
`FGL_WINDOW_OPENWITHFORM()`	Opens a new window with coordinates and form.
`FGL_WINDOW_CLEAR()`	Clears the window having the name that is passed as a parameter.
`FGL_WINDOW_CLOSE()`	Closes the window having the name that is passed as a parameter.
`FGL_WINDOW_CURRENT()`	Makes current the window having the name that is passed as a parameter.