Docs: add info on router variable evaluation order

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 857166fcdb91c09d8398e11b411902892ab9e737..b23f33d42d208dd8f5f5d80a4dbca3757f1c52b6 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -19728,6 +19728,10 @@ Values containing a list-separator should have them doubled.
 When a router runs, the strings are evaluated in order,
 to create variables which are added to the set associated with
 the address.
+.new
+This is done immediately after all the preconditions, before the
+evaluation of the &%address_data%& option.
+.wen
 The variable is set with the expansion of the value.
 The variables can be used by the router options
 (not including any preconditions)