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The Insert key Insert (often abbreviated Ins) is a key commonly found on computer keyboards.
- overtype mode, in which the cursor, when typing, overwrites any text that is present in the current location; and
- insert mode, where the cursor inserts a character at its current position, forcing all characters past it one position further.
The insert/overtype mode toggling is not global for the computer or even for a single application but rather local to the text input window in which the Insert key was pressed.
On early text-based computing environments and terminals, when the cursor is in overtype mode, it was represented as a block that surrounded the entire letter to be overstruck; when in insert mode, the cursor consisted of the vertical bar that is highly common among modern applications, or a blinking underline under the position where a new character would be inserted.
When keymapping using Octal code, set the desired key by sending \e\161 to perform the "insert" function.
Modern word processing applications operate in insert mode by default, but can still be switched to overtype mode by pressing the Insert key. Some applications indicate overtype mode with a letter-width cursor box, as opposed to the standard narrow cursor; however, others use the narrow cursor for both modes, and indicate overtype with an "OVR" indicator in the status bar.
Screen readers use the insert key for hotkeys for reading text, speaking formatting information, or opening the screen reader's configuration menu or window.
- Atwood, Jeff (2005-02-10). "Keyboarding". Coding Horror. Retrieved 2012-03-11.
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