+# Procedure scan-response {attr start toget}
+# attr attribute specification
+# start position of first term in the response
+# toget number of total terms to get
+# This procedure handles all scan-responses. $start specifies the list
+# entry number of the first incoming term. The $toget indicates the total
+# number of terms to be retrieved from the target. The $toget may be
+# negative in which case, scan is performed 'backwards' (- $toget is
+# the total number of terms in this case). This procedure usually calls
+# itself several times in order to get small scan-term-list chunks.