option set -- set various options for views and controls.

OPTION SET View$, "Auto-Resize"
OPTION SET View$, "Focus", HasFocus
OPTION SET Control$, "Enabled", IsEnabled 
OPTION SET Control$, "Label", NewLabel$
OPTION SET Control$, "Visible", IsVisible

OPTION SET View$, "Auto-Resize"
Automatically resize the view View$ to preferred (when this is supported by the view).

OPTION SET View$, "Focus", HasFocus
Set/remove the focus of View$ (when this is supported by the view).

OPTION SET Control$, "Enabled", IsEnabled 
Enable/disable the control Control$.

OPTION SET Control$, "Label", NewLabel$
Give a Control a new label.

OPTION SET Control$, "Visible", IsVisible
Set the control Control$ invisible or visible

Note:

The following widgets are controls:
CHECKBOX, RADIOBUTTON, SLIDER, TEXTCONTROL, BUTTON, COLORCONTROL, SPINCONTROL, CALENDAR