go tag: n.
the symbol or integer that, within the lexical scope
of a tagbody form, names an exit point
established by that tagbody form.
graphic: adj. (of a character)
being a "printing" or "displayable" character
that has a standard visual representation
as a single glyph, such as A or * or =.
Space is defined to be graphic.
Of the standard characters, all but newline are graphic.
See non-graphic.