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+THE CATALOG SECTION
+    
+    The  catalog  section  is  used  to  assign  names to columns in the
+    standard star catalog, and optionally, to  associate  error  columns
+    with the named columns.
+    
+    The  catalog   section  begins with the keyword catalog, followed by
+    any number of name and error(name), column associations.
+    
+    Syntax
+        catalog
+        
+        name number
+        
+        error(name) number
+    
+    The first declaration creates a name column number association.   It
+    consists  of  a  name  followed by a column number. The name becomes
+    the variable name for that column.
+    
+    The  second  declaration  creates  an  error  (name)  column  number 
+    association.   It  begins with the keyword error, followed by a name
+    in brackets and a column number.  The name must be the  name  of  an
+    input  column previously declared in the catalog section.  The error
+    declarations are optional.
+    
+    The column number must be a decimal integer greater than two,  since
+    catalog  files  always reserve the first column for a matching name.
+    This name is used to match objects in the catalog file with  objects
+    in the observations file.
+    
+    Example
+        # Sample catalog section for the UBV system.
+        
+        catalog
+        
+        V               2
+        error(V)        3
+        BV              4
+        error(BV)       5
+        UB              6
+        error(UB)       7