1) |
$: is used for self-reference, allowing
a verb to be defined recursively without necessarily
assigning a name to it, as illustrated
in Section 22.
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2) |
The names x. and y. are used in
explicit definition, discussed in Section 18.
They denote the arguments used in explicit definition.
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3) |
A name (such as ab_cd_) that has two
underbars of which one is the final character, is a locative.
Names used in a locale F can be referred to
in another locale G by using the suffix F
in a locative name of the form pqr_F_ ,
thus avoiding conflict with otherwise identical names in
the locale G .
See Section I of Part II
for further details.
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The form of the display invoked by entering a name
alone is established by