The following Viewport inquiry utility subroutines are available:-
UI_INQUIRE_BATCH_UPDATE ) Inquire current Viewport UIIQBU ) Batch Update Mode
UI_INQUIRE_SCREEN_DIMENSIONS ) Inquire Dimensions UIIQSD ) of Screen
UI_INQUIRE_SCROLL ) Inquire Scroll Viewport UIIQSC ) Size (in Lines)
UI_INQUIRE_VIEWPORT ) Inquire current Viewport UIIQVP )
UI_INQUIRE_VIEWPORT_CURSOR ) Inquire Viewport UIIQVC ) Cursor Position
UI_INQUIRE_VIEWPORT_DIMENSIONS ) Inquire Viewport UIIQVD ) Dimensions
UI_INQUIRE_VIEWPORT_EXISTS ) Inquire whether UIIQVX ) Viewport Exists
UI_INQUIRE_VIEWPORT_MODE ) Inquire current UIIQVM ) Viewport Mode
UI_INQUIRE_VIEWPORT_STYLE ) Inquire Viewport UIIQVS ) Text Style
UI_INQUIRE_VIEWPORT_VISIBLE ) Inquire Viewport
UIIQVV ) Visible