Index: doc/options.txt
===================================================================
--- doc/options.txt	(revision 4853)
+++ doc/options.txt	(working copy)
@@ -220,7 +220,7 @@
 ;--mdr7-excl=name[,name...]
 :	Specify words which should be omitted from the road index. 
 It was developed before option --road-name-config and is probably no longer needed.
-Matching is done case insensitive.
+Matching is case insensitive.
 :	Example usage: --mdr7-excl="Road, Street, Weg"
 
 ;--mdr7-del=name[,name...]
@@ -227,10 +227,10 @@
 :	Use this option if your style adds strings to the labels of roads which you
 want to see in the map but which should not appear in the result list
 of a road name / address search. The list is used like this:
-For each road label, mkgmap searches for the last blank. If one is found, it checks
-whether the word after it appears in the given list. If so, the word is removed
-and the search is repeated. The remaining string is used to create the index.
-The search is done case insensitive.
+Mkgmap examines the last word of each road label containing words separated by a
+space. If the last word appears in the given list, it is removed from the label
+to be used in the index and the process is repeated.
+The comparison is case insensitive.
 :	Example: Assume your style adds surface attributes like 'pav.' or 'unp.' to a road
 label. You can use --mdr7-del="pav.,unp." to remove these suffixes from the index.