This variable affects when screen scrolling will occur. When it is set to "1" (on, true, yes), scrolling and cursor positioning occur normally. When it is set to "0" (off, false, no), screen scrolling will occur only as the result of a SCROLL phrase in an ACCEPT or DISPLAY statement, and any DISPLAY statement that references a line past the bottom of the current window will be ignored. ACCEPT statements that reference a line past the bottom of the current window will be placed in the home position of the window. The default setting is "1".