Input Search Options
Keyboard: INPUTSEARCHOPTIONS (or -INPUTSEARCHOPTIONS for command line version)
Determines how command names are suggested when typing in the command bar. Select the options in the AutoComplete Options dialog box that displays.You can also make AutoComplete selections using the Options - Display tab.
The AutoComplete feature suggests names automatically when typing in the command bar. You can turn AutoComplete on and off by right-clicking the command bar and choosing AutoComplete.