diff --git a/docs/html/node20.html b/docs/html/node20.html
index cf1b15f3..c3658df1 100644
--- a/docs/html/node20.html
+++ b/docs/html/node20.html
@@ -450,7 +450,7 @@ number&nbsp;<IMG
  WIDTH="56" HEIGHT="36" ALIGN="MIDDLE" BORDER="0"
  SRC="img80.png"
  ALT="$\in [0, 1]$"></TD>
-<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=65>0.05</TD>
+<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=65>0.01</TD>
 <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=187>The threshold <IMG
  WIDTH="13" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
  SRC="img81.png"
diff --git a/docs/html/node31.html b/docs/html/node31.html
index 570f5a47..8aef6661 100644
--- a/docs/html/node31.html
+++ b/docs/html/node31.html
@@ -63,7 +63,7 @@ Mathematics Department, Macquarie University, Sydney.
 The command line arguments were: <BR>
  <STRONG>latex2html</STRONG> <TT>-local_icons -noaddress -dir ../../html userhtml.tex</TT>
 <P>
-The translation was initiated by Salvatore Filippone on 2017-10-04<FONT SIZE="+1"><FONT SIZE="+1"></FONT></FONT>
+The translation was initiated by Salvatore Filippone on 2017-10-23<FONT SIZE="+1"><FONT SIZE="+1"></FONT></FONT>
 <BR><HR>
 
 </BODY>
diff --git a/docs/mld2p4-2.1-guide.pdf b/docs/mld2p4-2.1-guide.pdf
index 45a911bf..547fab98 100644
--- a/docs/mld2p4-2.1-guide.pdf
+++ b/docs/mld2p4-2.1-guide.pdf
@@ -4254,7 +4254,7 @@ q
 []0 d 0 J 0.398 w 0 0 m 0 40.648 l S
 Q
 BT
-/F15 10.9091 Tf 620.069 745.075 Td [(0.05)]TJ
+/F15 10.9091 Tf 620.069 745.075 Td [(0.01)]TJ
 ET
 q
 1 0 0 1 691.244 713.912 cm
@@ -10060,8 +10060,8 @@ endobj
 682 0 obj
 <<
  /Title (MultiLevel Domain Decomposition Parallel Preconditioners Package based on PSBLAS, V. 2.1) /Subject (MultiLevel Domain Decomposition Parallel Preconditioners Package) /Keywords (Parallel Numerical Software, Algebraic Multilevel Preconditioners, Sparse Iterative Solvers, PSBLAS, MPI) /Creator (pdfLaTeX) /Producer ($Id: userguide.tex 2008-04-08 Pasqua D'Ambra, Daniela di Serafino, Salvatore Filippone$) /Author()/Title()/Subject()/Creator(LaTeX with hyperref package)/Producer(pdfTeX-1.40.17)/Keywords()
-/CreationDate (D:20171004092953+01'00')
-/ModDate (D:20171004092953+01'00')
+/CreationDate (D:20171023153405+01'00')
+/ModDate (D:20171023153405+01'00')
 /Trapped /False
 /PTEX.Fullbanner (This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016) kpathsea version 6.2.2)
 >>
@@ -10124,7 +10124,7 @@ endobj
 /W [1 3 1]
 /Root 681 0 R
 /Info 682 0 R
-/ID [<A21BBC4BF80012F58FCAA1EDEE3A0848> <A21BBC4BF80012F58FCAA1EDEE3A0848>]
+/ID [<E7D12EA4AA60DAFC3CDDEECC03E591BA> <E7D12EA4AA60DAFC3CDDEECC03E591BA>]
 /Length 3420      
 >>
 stream
diff --git a/docs/src/userinterface.tex b/docs/src/userinterface.tex
index 52ab58bd..084247c6 100644
--- a/docs/src/userinterface.tex
+++ b/docs/src/userinterface.tex
@@ -362,7 +362,7 @@ of levels. } \\
 %\verb|mld_aggr_thresh_| \par 
 \verb|'AGGR_THRESH'| & \verb|real(|\emph{kind\_parameter}\verb|)|
                          & Any~real \par number~$\in [0, 1]$
-                         & 0.05
+                         & 0.01
                          & The threshold $\theta$ in the aggregation algorithm,
                             see (\ref{eq:strongly_coup}) in Section~\ref{sec:aggregation}.
                             See also the note at the bottom of this table. \\ \hline