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+@x In my work (mainly TAOCP) I use \: (not \.) for the dot accent
+'&`&\relax\^&"&\relax\~&=&.&u&v\cr
+@y
+'&`&\relax\^&"&\relax\~&=&:&u&v\cr
+@z
+@x
+ 1,1,1,1,1,0,0,1, /* \.{\\-} and \.{\\.} */
+ 1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,1, /* \.{\\=} */
+@y
+ 1,1,1,1,1,0,1,1, /* \.{\\-} */
+ 1,1,1,1,1,1,1,1,1,1,0,1,1,0,1,1, /* \.{:} and \.{\\=} */
+@z
+@x and I use |...xref-tag...| for cross-references
+case '|': if (web>1) {
+ save_skipping=skipping;
+ goto skip_C_prime;
+ }
+@y
+case '|': if (web>1) {
+ save_skipping=skipping;
+ goto skip_C_prime;
+ } else discard_to('|');
+@z