<ul>
<li><b>Input fields precision</b> - a group of preferences controlling input
-precision for floating-point data.</li>
+ precision for floating-point data. The semantics of the precision
+ values is described in detail in <em>Using input widgets</em>
+ chapter of GUI documentation (Introduction to Salome Platform /
+ Introduction to GUI / Using input widgets). In brief: \b positive
+ precision value is the maximum allowed number of digits after the
+ decimal point in the fixed-point format; \b nagative precision value
+ is the maximum allowed number of significant digits in mantissa in
+ either the fixed-point or scientific format.</li>
<ul>
<li><b>Length precision</b> - allows to adjust input precision of coordinates and dimensions.</li>
<li><b>Angular precision</b> - allows to adjust input precision of angles.</li>
