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-rw-r--r--doc/plugins/write.mdwn4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index 77f336dca..0e1839c6c 100644
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -449,6 +449,10 @@ destination directory), register that the page will result in that file
being rendered. It's important to call this before writing to any file in
the destination directory.
+Ikiwiki uses this information to automatically clean up rendered files when
+the page that rendered them goes away or is changes to no longer render
+them. will_render also does a few important security checks.
+
#### `pagetype($)`
Given the name of a source file, returns the type of page it is, if it's