置ち換かんモード

noun

replace mode

Computing term for a text-editing mode where typed characters overwrite existing characters at the cursor position, as opposed to insert mode.

• エディターで置ち換かんモードに切きり替かえると、カーソル位い置ちの文も字じが上うわ書がきされる。

  When you switch to replace mode in the editor, the character at the cursor position is overwritten.