diff --git a/docs/modules/ROOT/pages/howto.adoc b/docs/modules/ROOT/pages/howto.adoc
deleted file mode 100644
index 2433c9d..0000000
--- a/docs/modules/ROOT/pages/howto.adoc
+++ /dev/null
@@ -1,10 +0,0 @@
-= How to use this Guide
-
-Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum ut fermentum dui, sed ultricies felis. Sed in
-euismod tortor. Donec ac sapien luctus, congue massa vitae, sodales metus. Pellentesque vitae leo interdum, tempus odio
-condimentum, bibendum nisi. Nunc facilisis nulla quis nibh tristique ullamcorper. Vivamus quis tortor a quam consequat
-lobortis. Ut pharetra, diam sit amet maximus molestie, enim elit luctus urna, a varius augue nibh et eros. Maecenas
-maximus dictum felis a fermentum. Curabitur pellentesque blandit metus eget pretium. Pellentesque habitant morbi
-tristique senectus et netus et malesuada fames ac turpis egestas. Quisque dui libero, commodo at neque sed, lacinia
-egestas felis. Aliquam erat volutpat. Duis scelerisque tristique nunc, eu porttitor enim ornare in. Vivamus mollis augue
-in orci tincidunt finibus.
\ No newline at end of file
diff --git a/docs/modules/ROOT/start-nav.adoc b/docs/modules/ROOT/start-nav.adoc
index f4e1f29..e69de29 100644
--- a/docs/modules/ROOT/start-nav.adoc
+++ b/docs/modules/ROOT/start-nav.adoc
@@ -1 +0,0 @@
-** xref:howto.adoc[]
diff --git a/features/wide-tables.adoc b/features/wide-tables.adoc
index 0072991..5e8a8a1 100644
--- a/features/wide-tables.adoc
+++ b/features/wide-tables.adoc
@@ -1,6 +1,6 @@
 = 4096 table columns
 :database-version: 23.2
-:database-category: SQL
+:database-category: sql
 
 [[feature_summary]]