Internal GUI (Graphical User Interface)

internal_feedback (integer, default: 1) controls the number of lines of output shown in the viewer window.

internal_gui (boolean, default: on) controls whether or not the internal graphical user interface (internal gui) is shown in the viewer window.

internal_gui_control_size (integer, default: 18) controls the height of controls in the internal gui.

internal_gui_mode (integer, default: 0) function unknown.

internal_gui_width (integer, default: 220) controls the width of the internal gui in pixels.

internal_prompt (boolean, default: on) controls whether or not the user is presented with a prompt in the viewer window or merely an output log.

overlay (boolean, default: off) controls whether or not output text is shown overlayed on the viewer window.

overlay_lines (integer, default: 5) controls the maximum number of lines of overlayed text.

show_progress (boolean, default: on) controls whether or not a progress bar is shown in the viewer window.

text (boolean, default: off) controls whether the viewer window is filled with text or graphics.

wizard_prompt_mode (integer, default: 1) affects how wizard prompts are shown.

wrap_output (boolean, default: off) this setting is apparently broken.