--- loncom/html/adm/help/tex/all_functions_table.tex	2018/06/06 18:40:08	1.17
+++ loncom/html/adm/help/tex/all_functions_table.tex	2018/09/12 22:00:19	1.18
@@ -35,7 +35,11 @@ sinh(x), cosh(x), tanh(x) &\&sinh(\$x),
 asinh(x), acosh(x), atanh(x) &\&asinh(\$x), \&acosh(\$x), \&atanh(\$x) &Inverse hyperbolic functions. \$x can be a pure number &  \\
  \hline 
 /DIS(\$x,''nn'') &\&format(\$x,'nn') &Display or format \$x as nn where nn is nF or nE or nS and n is an integer. & The difference is obvious. \\
- \hline 
+ \hline
+Not in CAPA &\$expr=\&math_calculus_expression() & Creates Math::Calculus::Expression object.  Methods are: \$expr->addVariable('x'), \$expr->setExpression('f(x)'), \$expr->simplify, \$expr->getExpression -- see Math::Calculus::Expression documentation at cpan.org for details. & \\
+ \hline
+Not in CAPA &(\$a,\$u)=\&conv_eng_format(\$x,\$b) & Converts numerical value \$x and base unit \$b to answer \$a and corresponding unit \$u in engineering format, i.e., the answer is scaled by powers of ten, and an appropriate prefix from: m u n p f a z y k M G T P E Z Y precedes the base unit. Called in a script block to generate variables to assign to answer and unit attributes of numericalresponse tag. & \\
+ \hline
 Not in CAPA &\&prettyprint(\$x,'nn','optional target') &Display or format \$x as nn where nn is nF or nE or nS and n is an integer. Also supports the first character being a \$, it then will format the result with a a call to \&dollarformat() described below. If the first character is a , it will format it with commas grouping the thousands. In S mode it will fromat the number to the specified number of significant figures and display it in F mode. In E mode it will attempt to generate a pretty x10\^{}3 rather than a E3 following the number, 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 
 Not in CAPA &\&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. &  \\