I-beam

I-beam (plural I-beams)

1. (engineering) A beam with cross-section shaped like a capital letter I (with serifs top and bottom), used in construction.
2. (computing, graphical user interface) A cursor shaped like the letter I, usually indicating text that can be edited or selected.
   • 1992, Ben Ezzell, Borland C++ 3.0 programming

     In general, the cursor image is the primary concern, with different types used to indicate selected functions such as I-beams or vertical bars for text editing, a pencil for drawing, or a hand with the index finger extended […]

• Mabie, abime