--- loncom/html/adm/help/tex/Problem_LON-CAPA_Functions.tex	2006/07/18 15:26:41	1.8
+++ loncom/html/adm/help/tex/Problem_LON-CAPA_Functions.tex	2008/02/15 17:03:16	1.12
@@ -53,10 +53,24 @@ erf = 2/sqrt(pi) integral (0,x) et-sq an
  
 \&dollarformat(\$x,'optional target')  & Reformats \$x to have a \$ (or $\backslash$\$ if in tex mode) and to have , grouping thousands. The 'optional target' argument is optional but can be used to force \&prettyprint to generate either 'tex' output, or 'web' output, most people do not need to specify this argument and can leave it blank.\\
 \hline
- 
+
+\parbox{6.49cm}{
+Option 1 - \$best = \&languages() \\
+Option 2 - @all = \&languages() \\
+Option 3 - \$best = \&languages($\backslash$@desired\_languages) \\
+Option 4 - @all = \&languages($\backslash$@desired\_languages) \\
+}& Returns the best language to use, in the first two options returns the languages codes in the preference order of the user. In the second two examples returns the best matches from a list of desired language possibilities. \\
+\hline
+
 \&roundto(\$x,\$n)  & Rounds a real number to n decimal points. \$x and \$n can be pure numbers \\
 \hline
  
+\&cas(\$s,\$e)&Evaluates the expression \$e inside the symbolic algebra system \$s. Currently, only the Maxima symbolic math system is implemented. Example: \&cas('maxima','6*7')\\ 
+\hline 
+
+\&implicit_multiplication(\$f)&Adds mathematical multiplication operators to the formula expression \$f where only implicit multiplication is used. Example: \&implicit_multiplication('2(b+3c)') returns 2*(b+3*c) \\
+\hline
+
 \&web(``a'',''b'',''c'') or \&web(\$a,\$b,\$c)  & Returns either a, b or c depending on the output medium. a is for plain ASCII, b for tex output and c for html output \\
 \hline