diff --git a/help/dataMiningHOWTO b/help/dataMiningHOWTO
index a31add2..16cec28 100644
--- a/help/dataMiningHOWTO
+++ b/help/dataMiningHOWTO
@@ -1,5 +1,6 @@
- 
-  To construct a condition for data mining <b><i>drag</i></b> one of the AMDA parameters
-  from the parameter tree and <b><i>drop</i></b> onto the panel.<br/>
-  Use <b>&</b> symbol as logical <b><i>AND</i></b> and  <b>|</b> symbol as logical <b><i>OR</i></b>.<br/>
-  <b><i>Attention !</i></b> Use <b><i>FLOAT</i></b> numbers in math expressions.<br/>
\ No newline at end of file
+To construct a condition for data mining <i>drag</i> one of the AMDA parameters
+from the parameter tree and <i>drop</i> onto the panel.
+<li>1. Use <b><i>FLOAT numbers<i></b> in math expressions; 
+<li>2. <b>Enclose</b> your expression in <b>brackets</b> - <i>(1./2.*imf(0)) > 0</i>
+<li>3. Use <b>&</b> as <i>AND</i> and <b>|</b> as <i>OR</i> and <b>enclose</b> every logical block in <b>brackets</b> - <i>(imf(0) > 0) & ((5.*imf(1)) < -5)
+
diff --git a/help/myParameterHOWTO b/help/myParameterHOWTO
index 59082ab..577b73c 100644
--- a/help/myParameterHOWTO
+++ b/help/myParameterHOWTO
@@ -1,4 +1,4 @@
- <li>1. To construct a new parameter <i>drag</i> one of the AMDA parameters from the Parameters tree
+  To construct a new parameter <i>drag</i> one of the AMDA parameters from the Parameters tree
   and <i>drop</i> it onto the Construct Parameter text area. 
  
  
\ No newline at end of file
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