diff --git a/templates/index.html.ep b/templates/index.html.ep
index 646ddf5..1d16c4c 100644
--- a/templates/index.html.ep
+++ b/templates/index.html.ep
@@ -720,7 +720,7 @@
     <div style="display:none;" id="ll_ttt">Log-likelihood: $$2\sum_{ij}O_{ij}\log\frac{O_{ij}}{E_{ij}}$$<p class="citation">Dunning, T. (1993): Accurate methods for the statistics of surprise and coincidence. Comput. Linguist. 19, 1 (March 1993), 61-74.</p>
       <p class="citation">Evert, Stefan (2004): <a href="http://purl.org/stefan.evert/PUB/Evert2004phd.pdf">The Statistics of Word Cooccurrences: Word Pairs and Collocations.</a> PhD dissertation, IMS, University of Stuttgart. Published in 2005, URN urn:nbn:de:bsz:93-opus-23714.</p></div>
     <div style="display:none;" id="logdice_ttt">Log-Dice: $$14 + \log_2 \frac{2f_{1,2}}{f_1 + f_2}$$<p class="citation">Rychlý, Pavel (2008): <a href="http://www.fi.muni.cz/usr/sojka/download/raslan2008/13.pdf">A lexicographer-friendly association score.</a> In Proceedings of Recent Advances in Slavonic Natural Language Processing, RASLAN, 6–9, 2008</p></div>
-    <div style="display:none;" id="logdiceaf_ttt">Log-Dice using "auto-focus", i.e. the window that yields the highest score.</div>
+    <div style="display:none;" id="logdiceaf_ttt">Log-Dice using "auto-focus", i.e. the highest value reached by any – not necessarily contiguous – selection \(S\) of positions: $$\max_S \left(14 + \log_2 \frac{2f_{1,2}(S)}{f_2 + f_1|S|}\right)$$ Dividing by the width of the selection makes the measure sensitive to how concentrated a pair is, which is what distinguishes actual collocations from words that merely occur in the same contexts. Note that LDaf is therefore not on the same scale as LD and can be higher or lower than it.</div>
 	  <div id="ids_logo">
 		  <a href="http://www.ids-mannheim.de/" target="_blank"><img src="/derekovecs/img/IDS-neu_farbig.svg" alt="Leibniz-Institut für Deutsche Sprache"/></a>
 	  </div>
@@ -942,7 +942,7 @@
                     <th id="logdice_tt">LD</th>
                     <th id="logdiceaf_tt">LDaf</th>
                     <th id="delta_tt" title="Delta to log-Dice score in reference corpus. ⚠: If the collocate is not within the top 200 of the reference corpus, a reference value of min(lD)-0.1 is assumed.">Δ</th>
-                    <th id="af_win" title="Positions around the target word that are selected by the auto-focus function are marked with ◾. Positions at which the collocate appears at least once are marked with ◽."><span class="regular"><%= loc 'af_window' %></span></th>
+                    <th id="af_win" title="Positions around the target word that are selected by the auto-focus function are marked with ◾. Positions at which the collocate appears at least once are marked with ◽. LL, MI, MI², MI³ and nPMI are computed over all positions marked here, the attested ones, rather than over the whole context window, so that a collocate occurring in few positions is rated higher than one spread over many. LD does not depend on any window; LDaf is the auto-focus score of the ◾ positions and is not on the same scale as LD."><span class="regular"><%= loc 'af_window' %></span></th>
                     <th title="PMI³ restricted to left neighbour">l-PMI³</th>
                     <th title="PMI³ restricted to right neighbour">r-PMI³</th>
                     <th title="nPMI restricted to left neighbour">l-nPMI</th>