--- loncom/html/adm/help/tex/Institutional_Integration_Course_Codes.tex	2008/07/28 23:14:54	1.1
+++ loncom/html/adm/help/tex/Institutional_Integration_Course_Codes.tex	2008/07/29 20:52:20	1.3
@@ -1,16 +1,14 @@
 \label{Institutional_Integration_Course_Codes}
 Courses in a domain can be self-cataloging if assigned an institutional
-code. For this to work, two routines need to be customized in localenroll.pm
+code. For this to work two routines need to be customized in localenroll.pm
 - \emph{instcode\_format()} and \emph{instcode\_defaults()}. The first
 of these is used to split institutional course codes into their constituent
-parts, and to populate some perl data structures with these data.
-LON-CAPA will use these perl structures to generate linked select boxes 
-which can be used when searching the {}``official'' course catalog.
-The second routine is used when constructing a regular expression for  
-retrieval of courses based on search criteria specified by the user via the
-linked select boxes. The search criteria are combined with defaults for any
-components not explicitly selected (the defaults are fragments of a generic 
-institutional code) to create the regular expression used in the course search.
+parts, and populate some perl data structures with these data, which
+LON-CAPA can use to generate linked select boxes which users can use
+to create filters to apply when searching the {}``official'' course
+catalog. The second routine constructs a regular expression used when
+searching for courses based on the filter chosen by the user, which
+will contain fragments of an institutional code. 
 
 \textbf{\large instcode\_format} 
 
@@ -40,14 +38,14 @@ titles (\$cat\_order), e.g., @\{\$\$cat\
 \end{enumerate}
 The routine returns 'ok' if no errors occurred.
 
-At MSU, {}``fs03nop590'' is an example of an institutional course
+At MSU, {}``fs03nop590,'' is an example of an institutional course
 code; including the following entry in the instcodes hash passed in
 by reference - \$\$instcodes\{'43551dedcd43febmsul1'\} = 'fs03nop590'
 would cause the \$codes perl data structure to be populated.
 
 fs03nop590 would be split as follows:
 
-\$\$codes\{'year'\} = '2003'
+\$\$codes\{\{'year'\} = '2003'
 
 \$\$codes\{'semester'\} = 'Fall'
 
@@ -79,7 +77,7 @@ The routine used at MSU is as follows:
 
 \texttt{foreach my \$cid (keys \%\{\$instcodes\}) \{}
 \begin{quotation}
-\texttt{if (\$\$instcodes\{\$cid\} =\~{} m/^({[}suf]s)(\textbackslash{}d\{2\})(\textbackslash{}w\{2,3\})(\textbackslash{}d\{3,4\}\textbackslash{}w?)\$/)
+\texttt{if (\$\$instcodes\{\$cid\} =\~{} m/\^{}({[}suf]s)(\textbackslash{}d\{2\})(\textbackslash{}w\{2,3\})(\textbackslash{}d\{3,4\}\textbackslash{}w?)\$/)
 \{}
 \begin{quotation}
 \texttt{\$\$codes\{\$cid\}\{'Semester'\} = \$1;}
@@ -92,7 +90,7 @@ The routine used at MSU is as follows:
 
 \texttt{my \$numyear = \$year;}
 
-\texttt{\$numyear =\~{} s/^0//;}
+\texttt{\$numyear =\~{} s/\^{}0//;}
 
 \texttt{\$\$codes\{\$cid\}\{'Year'\} = \$year;}
 
@@ -129,7 +127,7 @@ in institutional code. (\$code\_order)
 \end{enumerate}
 The routine returns 'ok' if no errors occurred.
 
-At MSU , the regaular expression fragments used mirror those included
+At MSU, the regular expression fragments used mirror those included
 in the regular expression used in instcode\_format() to split an institutional
 course code into its component parts.
 
@@ -142,7 +140,7 @@ course code into its component parts.
 \begin{quotation}
 \texttt{'Year' => '\textbackslash{}d\{2\}',}
 
-\texttt{'Semester' => '^{[}sfu]s',}
+\texttt{'Semester' => '\^{}{[}sfu]s',}
 
 \texttt{'Department' => '\textbackslash{}w\{2,3\}',}