[_CD6_]<interscript>1.0>Glossary-Interdoc.bravo!1

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Towards an Interchange Standard for Editable Documents — Glossary

An italicized word in a definition is defined in this glossary.

abbreviationAn invocation used to shorten a script, rather than to indicate structure

attributeA component of an environment, identified by its name, which is bound to a value

base languageThe part of the Interdoc language that is independent of the semantics of particular properties and attributes

base semanticsThe semantic rules that govern how scripts in the base language are elaborated to determine their contents, environments, and labels

bindingThe operation of associating a value with a name to add an attribute to an environment; also the resulting association

binding modeA value may be bound to an identifier as const, var, local, or persistent

BooleanAn enumerated primitive type (F, T) used to control selection and as primitive values

const bindingA binding of an attribute that prevents its being rebound in any contained scope

contentsThe vector of values denoted by a node of a script

documentThe rendition of a script in a representation suitable for some editor

dominant structureThe tree structure of a document corresponding to the node structure of its script

editor-specific nameA non-standard name used by a specific editor in scripts it generates; an editor may use editor-specific terms without interfering with the interchangeability of a script if it provides definitions of the standard names in terms of its editor-specific names

elaborate(verb) To develop the semantics of a script or a node of a script according to the Interdoc semantic rules. This is a left-to-right, depth-first processing of the script

encodingA particular representation of Interdoc scripts

external environmentA standard environment relative to which an entire script is elaborated

fidelityThe extent to which a transcription or rendition preserves contents, form, and structure

hexIntA component of an intSequence formed from a pair of letters in the set {A,B,. . .,O,P}, representing an integer 0 .. 255

hierarchical nameA name containing at least one period, whose prefix unambiguously denotes the naming authority that assigned its meaning

identifierA sequence of letters used to identify an attribute

integerA mathematical integer in a limited range; one of the primitive types

interchange encodingA standard encoding of Interdoc scripts

InterdocThe current name of this basis for an editable document standard

intSequenceAn abbreviated notation for sequences of small integers

invocationThe appearance of a name in an expression, except as the attribute of a binding

labelA tag, or a source, a target, or a link introduction placed in a node

linkThe cross product of a source and a target; in general, a link is a set of (source, target) pairs; in the special case when there is exactly one source and one target, a link behaves like a directed arc between a pair of nodes

link introductionThe appearance of id@! in a node, where id is the main identifier of a link

literalA representation of a value of a primitive type in a script

local bindingA binding of a value to a name, causing the current environment to be updated with the new attribute; any outer binding’s scope will resume at the end of the innermost containing node

nameA sequence of identifiers internally separated by periods; e.g., a.b.c

nested environmentThe initial environment of a node contained in another node

NILA name for the empty value; it does not lengthen a vector or node in which it appears

nodeEverything between a matched pair of {}s in a script; this generally represents a branch point in a document’s dominant structure

NullIdentifies the empty environment; the value it associates with any identifier is NIL

OuterA standard attribute of every environment, whose value is the environment just prior to the start of the current node

OutermostThe standard outer environment for an entire script; the value of an identifier in Outermost is the universal consisting of the same letters in upper case

persistent bindingA kind of binding within the scope of a var binding that acquires the scope of the var binding, and hence may endure beyond the end of the innermost containing node

primitive typeBoolean, Integer, Real, String, or Universal

primitive valueA literal or a node, vector, or environment containing only primitive values

private encodingOne of a number of non-standard encodings of an Interdoc script

propertyEach tag on a node labels it with a property; the properties of a node determine how it may be viewed and edited

quoted expressionA value which is an expression bracketted by single quotes ("’"); the expression is evaluated in each environment in which the identifier to which it is bound is invoked

renditionThe process of converting from a script to a document; also the result of that process

scopeThe region of the script in which invocations of the attribute named in a binding yield its value; the scope starts textually at the end of the binding, and generally terminates at the end of the innermost containing node

scriptAn Interdoc program; the interchangeable result of transcribing a document

selectionA conditional form in a script that denotes one of two expressions, depending on the value of a Boolean expression in the current environment

stringA literal which is a vector of characters bracketed by "<>", e.g., <This is a string!>

styleA quoted expression to be invoked in a node to modify the node’s environment, labels, or contents

SubA standard component of each environment, which is invoked to initialize nested environments

SUBSCRIPTA function that can be used to extract a value from a vector, e.g. SUBSCRIPT[(a b <str>), 3] is the value <str>

tagA universal name labelling a node using the syntax universal$; the properties of a node correspond to the set of tags labelling it

transcriptionThe process of converting from a document to a script; also the result of that process

transparencyA characteristic of Interdoc scripts that allows an editor to identify the nodes of a script that it understands and thereby enables it to operate on those nodes without disturbing the ones that it doesn’t understand

UnitsA set of definitions relating various typographical and scientifc units to the Interdoc standard units, meters; e.g., inch=.0254 pt=.013836*inch

universalA name whose first identifier is all uppercase; a universal name can be used at the top level in the external environment, e.g., XEROX.fonts.Helvetica

valueA primitive value, node, vector, environment, universal, or quoted expression

var bindingA binding that is intended to be superseded by persistent bindings within its scope; useful for maintaining such things as running figure numbers

vectorAn ordered sequence of values that may be subscripted