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30 lines
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<TITLE>CLHS: Section 22.2.1.3</TITLE>
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<H1><A REV=MADE HREF="http://www.lispworks.com/"><IMG WIDTH=80 HEIGHT=65 ALT="[LISPWORKS]" SRC="../Graphics/LWSmall.gif" ALIGN=Bottom></A><A REL=TOP HREF="../Front/index.htm"><IMG WIDTH=237 HEIGHT=65 ALT="[Common Lisp HyperSpec (TM)]" SRC="../Graphics/CLHS_Sm.gif" ALIGN=Bottom></A> <A REL=PREV HREF="22_bab.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="22_ba.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="22_bad.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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22.2.1.3 Compiling Format Strings</H2> <P>
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A <A REL=DEFINITION HREF="26_glo_f.htm#format_string"><I>format string</I></A> is essentially a program in a special-purpose language that performs printing, and that is interpreted by the <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> <A REL=DEFINITION HREF="f_format.htm#format"><B>format</B></A>. The <A REL=DEFINITION HREF="m_format.htm#formatter"><B>formatter</B></A> <A REL=DEFINITION HREF="26_glo_m.htm#macro"><I>macro</I></A> provides the efficiency of using a <A REL=DEFINITION HREF="26_glo_c.htm#compiled_function"><I>compiled function</I></A> to do that same printing but without losing the textual compactness of <A REL=DEFINITION HREF="26_glo_f.htm#format_string"><I>format strings</I></A>. <P>
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A <A REL=DEFINITION HREF="26_glo_f.htm#format_control"><I>format control</I></A> is either a <A REL=DEFINITION HREF="26_glo_f.htm#format_string"><I>format string</I></A> or a <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> that was returned by the the <A REL=DEFINITION HREF="m_format.htm#formatter"><B>formatter</B></A> <A REL=DEFINITION HREF="26_glo_m.htm#macro"><I>macro</I></A>. <P>
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<P><HR>The following <A REL=META HREF="../Front/X3J13Iss.htm">X3J13 cleanup issue</A>, <I>not part of the specification</I>, applies to this section:<P><UL><LI> <A REL=CHILD HREF="../Issues/iss170.htm">FORMAT-STRING-ARGUMENTS:SPECIFY</A><P></UL><HR>
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