-*Do not* make an entry in the character set dictionary mapping `vertical
-stick' to `l' or `I'. Instead, select enough of the whole word in
-question that no word would start with the other letter, and enter the
-whole word or part of it as a new glyph.
+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.
+
+*Do not* make an entry in the character set dictionary mapping
+`vertical stick' to `l' or `I'. Instead, select enough of the whole
+word in question that no word would start with the other letter, and
+enter the whole word or part of it as a new glyph as a new entry in
+the Word dictionary.