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THE META-HTML LANGUAGE REFERENCE MANUAL

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Short Description:	<i>Packages</i> are repositories which contain symbols and their values. Each time a symbol is referenced, a package must first be found, and then the symbol may be found within that package. You indicate which package to look the symbol up in by supplying a package <i>prefix</i>. When the prefix is not supplied, the symbol is looked up in the current package.
Long Description:	For example, a full reference to the symbol <var bar> stored in the <var foo> package looks like: <example> FOO::BAR </example> There are very few commands specifically for dealing with packages, because most of the operations are performed implicitly, rather than explicitly. To create a package, simply give the package name as part of the symbol, in the place where the symbol is normally used. <example> <set-var foo::bar = "Hello"> </example> This has the effect of creating the package <var foo> if it didn't already exist. The majority of the functions documented here perform package maintenance, as opposed to variable manipulation. There are functions for querying a package about its contens, for deleting an entire package, for exporting and importing packages to and from sessions, for copying the contents of packages, and for converting packages from an internal representation to a printable representation, called an <i>alist</i>.