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-rw-r--r--doc/ref/api-control.texi9
1 files changed, 6 insertions, 3 deletions
diff --git a/doc/ref/api-control.texi b/doc/ref/api-control.texi
index ca7ad4af6..6eac8726f 100644
--- a/doc/ref/api-control.texi
+++ b/doc/ref/api-control.texi
@@ -494,14 +494,17 @@ those passed to @code{abort-to-prompt}.
@end deffn
@deffn {Scheme Procedure} make-prompt-tag [stem]
-Make a new prompt tag. Currently prompt tags are generated symbols.
-This may change in some future Guile version.
+Make a new prompt tag. A prompt tag is simply a unique object.
+Currently, a prompt tag is a fresh pair. This may change in some future
+Guile version.
@end deffn
@deffn {Scheme Procedure} default-prompt-tag
Return the default prompt tag. Having a distinguished default prompt
tag allows some useful prompt and abort idioms, discussed in the next
-section.
+section. Note that @code{default-prompt-tag} is actually a parameter,
+and so may be dynamically rebound using @code{parameterize}.
+@xref{Parameters}.
@end deffn
@deffn {Scheme Procedure} abort-to-prompt tag val1 val2 @dots{}