Add an `Up' link to the HTML navigation bar of sufficiently deep documents.

(This doesn't affect any of the source texts I know about.)
Also add <link rel="up">, even in the cases where it's just the same as
<link rel="ToC">. (This does.)

[originally from svn r7193]

2 files changed, 8 insertions, 2 deletions

diff --git a/doc/index.but b/doc/index.but
index e9d6e51..351e3d2 100644
--- a/doc/index.but
+++ b/doc/index.but
@@ -305,6 +305,9 @@ configuration directive
 \IM{\\cfg\{html-nav-next-text\}} \c{html-nav-next-text} configuration directive
 \IM{\\cfg\{html-nav-next-text\}} \cw{\\cfg\{html-nav-next-text\}}
 
+\IM{\\cfg\{html-nav-up-text\}} \c{html-nav-up-text} configuration directive
+\IM{\\cfg\{html-nav-up-text\}} \cw{\\cfg\{html-nav-up-text\}}
+
 \IM{\\cfg\{html-nav-separator\}} \c{html-nav-separator} configuration directive
 \IM{\\cfg\{html-nav-separator\}} \cw{\\cfg\{html-nav-separator\}}
 
diff --git a/doc/output.but b/doc/output.but
index 0cea3c2..98637df 100644
--- a/doc/output.but
+++ b/doc/output.but
@@ -664,8 +664,10 @@ the index.
 
 \dt \I{\cw{\\cfg\{html-nav-next-text\}}}\cw{\\cfg\{html-nav-next-text\}\{}\e{text}\cw{\}}
 
-\dd The text used for the \q{previous page} and \q{next page} links on
-the navigation bar.
+\dt \I{\cw{\\cfg\{html-nav-up-text\}}}\cw{\\cfg\{html-nav-up-text\}\{}\e{text}\cw{\}}
+
+\dd The text used for the \q{previous page}, \q{next page}, and \q{up}
+links on the navigation bar.
 
 \dt \I{\cw{\\cfg\{html-nav-separator\}}}\cw{\\cfg\{html-nav-separator\}\{}\e{text}\cw{\}}
 
@@ -965,6 +967,7 @@ The \i{default settings} for Halibut's HTML output format are:
 \c \cfg{html-post-versionid}{]}
 \c \cfg{html-nav-prev-text}{Previous}
 \c \cfg{html-nav-next-text}{Next}
+\c \cfg{html-nav-up-text}{Up}
 \c \cfg{html-nav-separator}{ | }
 \c
 \c \cfg{html-output-charset}{ASCII}