User:Cousteau/sandbox/templates/morse3

(Like morse2, but using span for the boxes -- more elegant, but uglier)

Usage:

where  is a sequence of one or more of the following characters:

Examples:
 * (morse "P")
 * ($\overline{RRRRR}$ prosign, currently impossible to obtain with morse)
 * ("hello world")

Note: do not surround the  with spaces or use multiple consecutive spaces; otherwise the spacing will be incorrect:
 * (11 spaces)
 * (7 spaces)