SCREENEXISTS: Revision history

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25 November 2022

4 July 2022

19 April 2022

  • curprev 15:3215:32, 19 April 2022‎ SMcNeill talk contribs‎ 817 bytes +817‎ Created page with "{{DISPLAYTITLE:_SCREENEXISTS}} The _SCREENEXISTS function returns true (-1) once a screen has been created. {{PageSyntax}} : {{Parameter|screenReady%%}} = _SCREENEXISTS {{PageDescription}} * Function returns true (-1) once a program screen is available to use or change. * Can be used to avoid program errors because a screen was not ready for input or alterations. ** Use before _TITLE, _SCREENMOVE and other functions that require the output window to h..."
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