+# Traditional word index
index w
completeness 0
charmap string.chr
+# Phrase index
index p
completeness 1
charmap string.chr
+# URX (URL) index
index u
completeness 0
charmap urx.chr
+# Numeric index (integer only)
index n
completeness 0
charmap numeric.chr
+# Null map index (no mapping at all)
index 0
completeness 0
charmap @