[XML-SIG] string interning

[Alexandre Fayolle]

Hello,

I was browsing in the source code, and came accross this in
xml.sax.handler :

feature_string_interning = "http://xml.org/sax/features/string-interning"
# true: All element names, prefixes, attribute names, Namespace URIs, and
#       local names are interned using the built-in intern function.
# false: Names are not necessarily interned, although they may be
(default).
# access: (parsing) read-only; (not parsing) read/write

what does 'interning' mean in this context ?

Alexandre Fayolle
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