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+Title: cardfmt
+
+
+NAME
+====
+ ft_cardfmt,ft_cardkey,ft_cardset,ft_cardsetl,ft_cardseti,ft_cardsetr,ft_cardsets,ft_cardclr,ft_cardcpy
+- Fitsy FITS card set routines.
+
+SYNOPSIS
+========
+ 
+
+-
+FITSCard ft_cardfmt(FITSCard card, char *name, int n, FITSType type, void *value, int prec, char *comm);
+FITSCard ft_cardkey(FITSCard card, char *name, int n);
+FITSCard ft_cardset(FITSCard card, FITSType type, void *value, int prec, char *comm);
+FITSCard ft_cardsetl(FITSCard card, int lvalue, char *comm);
+FITSCard ft_cardseti(FITSCard card, int ivalue, char *comm);
+FITSCard ft_cardsetr(FITSCard card, double rvalue, int prec, char *comm);
+FITSCard ft_cardsets(FITSCard card, char *svalue, char *comm);
+FITSCard ft_cardclr(FITSCard card, int ncards);
+FITSCard ft_cardcpy(FITSCard card1, FITSCard card2);
+
+
+-
+PARAMETERS
+==========
+  * #"FITSCard card" - FITS card to format.
+  * #"char *name" - keyword name.
+  * #"int n" - keyword index number, if is zero no
+      index number is appended to the
+      keyword.
+  * #"FITSType type" - type of the card.
+
+       Possible values for a #FITSType are as follows:
+        * #"FT_COMMENT"
+        * #"FT_LOGICAL"
+        * #"FT_INTEGER"
+        * #"FT_STRING"
+        * #"FT_VALUE"
+        * #"FT_REAL"
+        * #"FT_COMPLEX"
+
+  * #"void *value" - pointer to the value to format. The
+      pointer must be of the apropriate type.
+  * #"int prec" - If type is FT_REAL the value is formatted
+      at this precision. Otherwise this parameter
+      is ignored.
+  * #"char *comm" - Comment for the card.
+  * #"int lvalue" - Logical to format as a FITS value.
+  * #"int ivalue" - Integer to format as a FITS value.
+  * #"double rvalue" - Double to format as a FITS value.
+  * #"char *svalue" - String to format as a FITS value.
+  * #"int ncards" - Number of 80 character FITS cards to clear
+  * #"FITSCard card1" - Destination card
+  * #"FITSCard card2" - Source card
+
+DESCRIPTION
+===========
+
+ ft_cardfmt
+ ----------
+ Format a FITS card with the supplied values.
+
+ ft_cardkey
+ ----------
+ Format a keyword into a FITS card.
+
+ ft_cardset
+ ----------
+ Format a value into a FITS card.
+
+ ft_cardsetl
+ -----------
+ Format a logical value into a FITS card.
+
+ ft_cardseti
+ -----------
+ Format an integer value into a FITS card.
+
+ ft_cardsetr
+ -----------
+ Format a real value into a FITS card.
+
+ ft_cardsets
+ -----------
+ Format a string value into a FITS card.
+
+ ft_cardclr
+ ----------
+ Clear FITS cards by writing space into them.
+
+ ft_cardcpy
+ ----------
+ Copy a FITS card.
+
+EXAMPLES
+========
+ Format the keyword part of a card:
+
++
+
+		FITSHead	fits;
+		FITSBuff	card;
+		FITSCard	here;
+
+	#ft_cardclr(&card, 1);			/* Clear out the card first		*-/
+
+	#ft_cardkey(&card, "RA");			/* Set the keyword		*-/
+	#ft_cardsetr(&card, 14.789, 3, "OBS RA");	/* Set the value of RA.		*-/
+
+	here = #ft_cardapp(fits, &card);		/* Put the new card into a header*-/
+
+	#ft_cardsetr(here, 15.567, 3, FT_Comment);	/* Set a new value after it's in 
+							   the header and reuse the existing
+							   comment *-/
+
++ 
+ 
+ Format the value part of a card:
+
++
+		int	l = 1;
+		int	i = 15;
+		double	d = 34.7;
+		char   *c = "Shutter";
+
+		FITSHead	fits;
+		FITSCard	card;
+
+	/* Get a card pointer from the header
+	 *-/
+	card = #ft_cardfind(fits, "Keyword", 0);
+
+	#ft_cardsetl(card, l, "A true value");
+	#ft_cardseti(card, i, "15 is the number");
+	#ft_cardsetr(card, d, 4, "Four digits of precision here");
+
+	/* In this example the special pointer #FT_Comment is used to 
+	   use the existing comment in the card.
+	 *-/
+	#ft_cardsets(card, c, FT_Comment);
+
++