Texas Instruments TI-83 PLUS - Manual (Page 35)

TI-83 Plus Operating the TI-83 Plus Silver Edition 32
The variable name you selected is displayed on the bottom line and
the cursor disappears.
3. Press Í . The variable contents are inserted where the cursor
was located before you began these steps.
Note: You can edit the characters pasted to the expression without
affecting the value in memory.