These system variables also affect the display of dialog boxes:
ATTDIA controls whether INSERT uses a dialog box for attribute value entry.
CMDNAMES displays the name (in English) of the currently active command and transparent command.
EXPERT controls whether certain warning dialog boxes are displayed.
FILEDIA controls the display of dialog boxes used with commands that read and write files. For example, if FILEDIA is set to 1, SAVEAS displays the Save Drawing As dialog box. If FILEDIA is set to 0, SAVEAS displays prompts on the command line. The procedures in this documentation assume that FILEDIA is set to 1. Even when FILEDIA is set to 0, you can display a file dialog box by entering a tilde (~) at the first prompt.
FILEDIA and EXPERT are useful when you use scripts to run commands.