30 lines
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30 lines
4.1 KiB
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<TITLE>CLHS: Section 11.1.1.2.1</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="11_aab.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="11_aab.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="11_aabb.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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<H2>
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11.1.1.2.1 Internal and External Symbols</H2> <P>
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The mappings in a <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>package</I></A> are divided into two classes, external and internal. The <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbols</I></A> targeted by these different mappings are called <A REL=DEFINITION HREF="26_glo_e.htm#external_symbol"><I>external symbols</I></A> and <A REL=DEFINITION HREF="26_glo_i.htm#internal_symbol"><I>internal symbols</I></A> of the <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>package</I></A>. Within a <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>package</I></A>, a name refers to one <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A> or to none; if it does refer to a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>, then it is either external or internal in that <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>package</I></A>, but not both. <A REL=DEFINITION HREF="26_glo_e.htm#external_symbol"><I>External symbols</I></A> are part of the package's public interface to other <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>packages</I></A>. <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>Symbols</I></A> become <A REL=DEFINITION HREF="26_glo_e.htm#external_symbol"><I>external symbols</I></A> of a given <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>package</I></A> if they have been <A REL=DEFINITION HREF="26_glo_e.htm#exported"><I>exported</I></A> from that <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>package</I></A>. <P>
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A <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A> has the same <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A> no matter what <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>package</I></A> it is <A REL=DEFINITION HREF="26_glo_p.htm#present"><I>present</I></A> in, but it might be an <A REL=DEFINITION HREF="26_glo_e.htm#external_symbol"><I>external symbol</I></A> of some <A REL=DEFINITION HREF="26_glo_p.htm#package"><I>packages</I></A> and an <A REL=DEFINITION HREF="26_glo_i.htm#internal_symbol"><I>internal symbol</I></A> of others. <P>
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<A REL=NAVIGATOR HREF="../Front/StartPts.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Starting Points]" SRC="../Graphics/StartPts.gif" ALIGN=Bottom></A><A REL=TOC HREF="../Front/Contents.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Contents]" SRC="../Graphics/Contents.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Master.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Index]" SRC="../Graphics/Index.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Symbol.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Symbols]" SRC="../Graphics/Symbols.gif" ALIGN=Bottom></A><A REL=GLOSSARY HREF="../Body/26_a.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Glossary]" SRC="../Graphics/Glossary.gif" ALIGN=Bottom></A><A HREF="../Front/X3J13Iss.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Issues]" SRC="../Graphics/Issues.gif" ALIGN=Bottom></A><BR>
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<A REL=COPYRIGHT HREF="../Front/Help.htm#Legal"><I>Copyright 1996-2005, LispWorks Ltd. All rights reserved.</I></A><P>
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