clarify indexdb is cached info, rebuildable

2 files changed, 7 insertions, 3 deletions

diff --git a/doc/forum/tag_plugin:_rebuilding_autocreated_pages.mdwn b/doc/forum/tag_plugin:_rebuilding_autocreated_pages.mdwn
index 02138326d..114837031 100644
--- a/doc/forum/tag_plugin:_rebuilding_autocreated_pages.mdwn
+++ b/doc/forum/tag_plugin:_rebuilding_autocreated_pages.mdwn
@@ -6,3 +6,6 @@ I have a bunch of tag pages autogenerated by the tag plugin. As part of a redesi
 > update them. --[[Joey]]
 
 >> Thanks. I thought about deleting `indexdb`, but hesitated to do that. According to [[tips/inside dot ikiwiki]], `indexdb` stores "all persistent state about pages". I didn't know if it's harmless to lose all persistent state. --dkobozev
+
+>>> The persistant state is best thought of as a cache,
+>>> so it's safe to delete it. --[[Joey]] 
diff --git a/doc/tips/inside_dot_ikiwiki.mdwn b/doc/tips/inside_dot_ikiwiki.mdwn
index b81ffae8d..a74d00f47 100644
--- a/doc/tips/inside_dot_ikiwiki.mdwn
+++ b/doc/tips/inside_dot_ikiwiki.mdwn
@@ -6,9 +6,10 @@ you need/want to.
 
 ## the index
 
-`.ikiwiki/indexdb` contains a cache of information about pages, as well
-as all persisitant state about pages. It used to be a (semi) human-readable
-text file, but is not anymore.
+`.ikiwiki/indexdb` contains a cache of information about pages.
+This information can always be recalculated by rebuilding the wiki.
+(So the file is safe to delete and need not be backed up.)
+It used to be a (semi) human-readable text file, but is not anymore.
 
 To dump the contents of the file, enter a perl command like this.