--- loncom/html/adm/help/tex/Problem_LON-CAPA_Functions.tex	2008/06/12 00:47:08	1.17
+++ loncom/html/adm/help/tex/Problem_LON-CAPA_Functions.tex	2010/02/05 21:49:02	1.19
@@ -65,7 +65,8 @@ Option 4 - @all = \&languages($\backslas
 \&roundto(\$x,\$n)  & Rounds a real number to n decimal points. \$x and \$n can be pure numbers \\
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-\&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')\\ 
+\&cas(\$s,\$e,\$l)&Evaluates the expression \$e inside the symbolic algebra system \$s. Currently, only the Maxima symbolic math system is implemented. 
+\$l is an optional comma-separated list of libraries. 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) \\
@@ -132,7 +133,7 @@ Option 1 - \&map(\$seed,[$\backslash$\$w
  
 \&name(), \&student\_number(), \&firstname(), \&lastname()  & Return the full name in the following format: lastname, firstname initial. Student\_number returns the student 9-alphanumeric string. The functions firstname and lastname return just that part of the name. If undefined, the functions return null. \\
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-\&check\_status(\$partid) &Returns a number identifing the current status of a part. True values mean that a part is ``done'' (either unanswerable because of tries exhaustion, or correct) or a false value if a part can still be attempted. If \$part is unspecfied, it will check either the current $<$part$>$'s status or if outside of a $<$part$>$, check the status of previous $<$part$>$. The full set of return codes are: 'undef' means it is unattempted, 0 means it is attmpted and wrong but still has tries, 1 means it is marked correct, 2 means they have exceed maximum number of tries, 3 means it after the answer date\\
+\&check\_status(\$partid) &Returns a number identifying the current status of a part. True values mean that a part is ``done'' (either unanswerable because of tries exhaustion, or correct) or a false value if a part can still be attempted. If \$part is unspecified, it will check either the current $<$part$>$'s status or if outside of a $<$part$>$, check the status of previous $<$part$>$. The full set of return codes are: 'undef' means it is unattempted, 0 means it is attempted and wrong but still has tries, 1 means it is marked correct, 2 means they have exceed maximum number of tries, 3 means it after the answer date.\\
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 \&open\_date(\$partid), \&due\_date(\$partid), \&answer\_date(\$partid)  & Problem open date, due date and answer date in local human-readable format.  Part 0 is chosen if \$partid is omitted.\\
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