How to set numwidth in the grid output of PL/SQL developer?

Question

I\'m running some queries in PL/SQL Developer, and one of the columns in the result has 18-digit numbers. Instead of displaying the entire number in the resulting grid, PL/S

Answer 1

Same answer as Ilya Kogan, but in PL SQL Dev 13 the Preferences has moved and is now under an little tuner icon in the title bar. Then SQL Window -> Number fields to_char