+Note regarding `l' and `I'
+--------------------------
+
+At the beginning of each cell in the table, we expect uppercase; in
+the middle of a word we expect lowercase; and, unfortunately, after an
+inter-word gap, we are not sure.
+
+This is troublesome because `l' and `I' look identical on the screen.
+So any time we see an unfamiliar word starting with `l' or `I', the
+program has to ask about it.
+
+After an interword gap, we first search for a Word entry in the
+dictionary. If there is a match we use it. Otherwise we search both
+the uppercase and lowercase dictionaries; if one matches and the other
+doesn't, or one matches a wider character than the other, we use it.
+If that fails to resolve the ambiguity we must ask.
+
+Don't try to make an entry in the character set dictionary mapping
+`vertical stick' to `l' or `I'. Instead, select the whole word (or
+enough of it that no different word would start with the other
+letter), and enter the whole thing as a new glyph in the Word
+dictionary.
+
+For example, in the supplied dictionary there is already a glyph for
+`Iron'; this is OK because there are no words which start `lron'.