--- loncom/html/adm/help/tex/Numerical_Response_Units.tex 2002/07/18 15:52:27 1.2
+++ loncom/html/adm/help/tex/Numerical_Response_Units.tex 2013/07/05 18:30:40 1.5
@@ -1,8 +1,14 @@
\label{Numerical_Response_Units}
Numerical Response problems can require units. In the problem editing form,
-place the desired unit in the \textbf{Unit} field. For information about
-what units the system accepts, see http://capa4.lite.msu.edu/demolibrary/Links/UnitsSymbolsT2.html.
+place the desired unit in the \textbf{Unit} field. A complete list of
+units is in the section \ref{Physical_Units}.
The computer will accept the answer in any of its accepted unit formats.
For example, if the answer to a problem is {}``1ft'', the computer will
accept {}``12in'' as correct.
+
+Additional units can be defined using the ``customunits'' parameter, which is a comma-separated list of unit conversions. For example
+\begin{verbatim}
+peck=2*gallon,bushel=8*gallon,gallon=4.4*L
+\end{verbatim}
+would define the new units peck, bushel, and gallon. The last entry in a conversion chain always needs to be a unit that LON-CAPA already supports.