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+<TITLE> headset
+</TITLE>
+<p>
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+
+<A NAME="section-1.1.1"><H3>NAME</H3></A>
+
+<P>
+ ft_headsetl,ft_headseti,ft_headsetr,ft_headsets -Fitsy FITS header set routines.
+
+<A NAME="section-1.1.2"><H3>SYNOPSIS</H3></A>
+
+ 
+
+<PRE>
+FITSCard ft_headsetl(FITSHead fits, char *name, int n, int lvalue, char *comm);
+FITSCard ft_headseti(FITSHead fits, char *name, int n, int ivalue, char *comm);
+FITSCard ft_headsetr(FITSHead fits, char *name, int n, double rvalue, int prec, char *comm);
+FITSCard ft_headsets(FITSHead fits, char *name, int n, char *svalue, char *comm);
+
+
+<P>
+</PRE>
+<A NAME="section-1.1.3"><H3>PARAMETERS</H3></A>
+
+<UL>
+<P>
+  <LI> <B>FITSHead fits</B> - FITS header to search in.
+  <LI> <B>char *name</B> - keyword name.
+  <LI> <B>int n</B> - keyword index number, if is zero no
+      index number is appended to the keyword.
+  <LI> <B>int lvalue</B> - Logical to format as a FITS value.
+  <LI> <B>char *comm</B> - Comment for the card.
+  <LI> <B>int ivalue</B> - Integer to format as a FITS value.
+  <LI> <B>double rvalue</B> - Double to format as a FITS value.
+  <LI> <B>int prec</B> - The value is formatted
+      at this precision.
+  <LI> <B>char *svalue</B> - String to format as a FITS value.
+
+</UL>
+<A NAME="section-1.1.4"><H3>DESCRIPTION</H3></A>
+
+
+<A NAME="section-1.1.4.1"><H4>ft_headsetl</H4></A>
+
+<P>
+ Find a FITS card in the header and format a logical value into it.
+
+<A NAME="section-1.1.4.2"><H4>ft_headseti</H4></A>
+
+<P>
+ Find a FITS card in the header and format a logical value into it.
+
+<A NAME="section-1.1.4.3"><H4>ft_headsetr</H4></A>
+
+<P>
+ Find a FITS card in the header and format a logical value into it.
+
+<A NAME="section-1.1.4.4"><H4>ft_headsets</H4></A>
+
+<P>
+ Find a FITS card in the header and format a logical value into it.
+
+<A NAME="section-1.1.5"><H3>EXAMPLES</H3></A>
+
+<P>
+ Set the value part of a card in a header:
+
+<PRE>
+                int     i = 15;
+                double  d = 34.7;
+                char   *c = "Shutter";
+
+                FITSCard        fits;
+                FITSCard        card;
+
+        card = <B>ft_headsetl</B>(fits, "Cosmic", 0, 1, "Removed Cosimics (silver bullet method)");
+        card = <B>ft_headseti</B>(fits, "IValue" , 0, i, "15 is the number");
+
+        card = <B>ft_headsetr</B>(fits, "Gain", 1, d, 2, "GAIN1");
+        card = <B>ft_headsetr</B>(fits, "Gain", 2, d, 2, "GAIN2");
+
+        card = <B>ft_headsets</B>(fits, "XHIST", 1, "Xray processed!", NULL);
+
+        /* In this example the special pointer <B>ft_comment</B> is used to 
+           use the existing comment in the card.
+         */
+        card = <B>ft_headsets</B>(fits, "FILTER", 0, "V", ft_comment);
+
+<P>
+</PRE>
+
+<p>
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