A selection is a range of zero or more characters highlighted in a source file window. Selected text is highlighted displayed in the "Selection" style; usually reverse video.
Each source file window has its own single selection. Switching between windows leaves the selections in each window intact.
Selections can be made with the keyboard and the mouse. Commands used for selecting text are listed below. To select text with the mouse, simply point at the text and drag across it. Double-clicking the left mouse button selects a whole word.
Scrolling the window will only change the selection if the "Keep cursor in window when paging up and down" option is turned on in the Preferences: General dialog box. Otherwise, only cursor movement keys, pointing with the mouse, or editing your file will change the selection.
The selection in the current window and current file is referred to as the current selection.
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