GET_INFO(SCREEN)

 For an overview of the GET_INFO built-in, see the HELP topic GET_INFO.
 The following strings can be used for parameter2 when parameter1 is the
 keyword SCREEN:

 Parameter 2      | Return Value     (Parameter 1 is keyword SCREEN)
 -----------------+----------------------------------------------------------
 "ansi_crt"       | (1 or 0) - Indicates whether the terminal is an ANSI_CRT
 "auto__repeat"   | (1 or 0) - Indicates whether auto repeat feature is on
 "avo"            | (1 or 0) - Indicates whether the terminal has the
                  |            advanced video option (AVO)
 "cross_window_   | (1 or 0) - Indicates whether the CURSOR_VERTICAL built-in
 bounds"          |            crosses a window boundary when the cursor is
                  |            at the top or bottom of a window
 "current_column" | Integer  - Column number of the current column as of the
                  |            most recent screen update
 "current_row"    | Integer  - Screen line number of the current row as of
                  |            the most recent screen update
 "dec_crt"        | (1 or 0) - Indicates whether the terminal is a DEC_CRT
 "dec_crt2"       | (1 or 0) - Indicates whether the terminal is a DEC_CRT2
 "edit_mode"      | (1 or 0) - Indicates whether the terminal is set to
                  |            edit mode
 "eightbit"       | (1 or 0) - Indicates whether the terminal uses eightbit
                  |            characters
 "line_editing"   | Keyword  - Current method of line editing (insert or
                  | or 0       overstrike); 0 if none
 "mouse"          | (1 or 0) - Indicates whether VAXTPU's mouse support
                  |            capability is turned on
 "original_width" | Integer  - Physical width of the screen when VAXTPU was
                  |            invoked
 "prompt_length"  | Integer  - Number of lines in the prompt area
 "prompt_row"     | Integer  - Screen line number at which the prompt area
                  |            begins
 "screen_update"  | (1 or 0) - Indicates whether screen updating is turned on
 "scroll"         | (1 or 0) - Indicates whether the terminal has scrolling
                  |            regions, DEC_CRT
 "visible_length" | Integer  - Page length of the terminal
 "vt100"          | (1 or 0) - Indicates whether the terminal a VT100-series
 "vt200"          | (1 or 0) - Indicates whether the terminal a VT200-series
 "vt300"          | (1 or 0) - Indicates whether the terminal a VT300-series
 "vk100"          | (1 or 0) - Indicates whether the terminal is a GIGI
 "width"          | Integer  - Current physical width of the screen