diff --git a/doc/interfacing.asciidoc b/doc/interfacing.asciidoc
index b966bee6..8efe75e6 100644
--- a/doc/interfacing.asciidoc
+++ b/doc/interfacing.asciidoc
@@ -85,13 +85,13 @@ external completions are provided using an option to store completion, which
 have the following format.
 
 ----
-line.column[+len]@timestamp:candidate1[@desc1[@menu1]]:candidate2[@desc2[@menu2]]:...
+line.column[+len]@timestamp:candidate1[|desc1[|menu1]]:candidate2[|desc2[|menu2]]:...
 ----
 
 the first element of this string list specify where and when this completions
 applies, the others are simply completion candidates, eventually containing
-a descriptive text (after an `@` separator), and a separate menu text (after
-the second `@` separator).
+a descriptive text (after an `|` separator), and a separate menu text (after
+the second `|` separator).
 
 to effectively use that completion option, it should get added to the completers
 option.