Draws a text string at a specified point, using the current text font, and the current text foreground and background colors. The specified point is used as the starting top-left point for drawing characters (e.g, if ``W'' is drawn, the point is roughly the location of the top-left pixel in the ``W'').
See get-text-extent for information on the size of the drawn text.
See also set-text-foreground, set-text-background, and set-text-mode.
The current brush and current pen settings for the DC have no effect on how the text is drawn.
Restrictions on the magnitude of drawing coordinates are described with dc<%>.
The text string is drawn starting from the offset character, and continuing until the end of text or the first null character
If big-chars? is #t, then text is interpreted as a Unicode string instead of an ASCII string; however, Unicode strings are not yet fully supported.