Apple Newton Utilities Guide de l'utilisateur télécharger pdf (Page 911)

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GLOSSARY

GL-3

ﬂag A value that is set either on or off to

enable a feature. Typically, ﬂag values are single

bits, though they can be groups of bits or a

whole byte.

font spec A structure used to store information

about a font, including the font family, style, and

point size.

frame An unordered collection of slots, each

of which consists of a name and value pair. The

value of a slot can be any type of object, and

slots can be added or removed from frames

dynamically. A frame can have a user-speciﬁed

class. Frames can be used like records in Pascal

and structs in C, and also as objects that respond

to messages.

free-form entry ﬁeld A ﬁeld of a

protoCharEdit view that accepts any

characters as user input.

function object A frame containing

executable code. Function objects are created by

the function constructor:

func(args) funcBody

An executable function object includes values

for its lexical and message environment, as well

as code. This information is captured when the

function constructor is evaluated at run time.

gesture A handwritten mark that is recog-

nized as having a special meaning in the Newton

system, such as tap, scrub, caret, and so on.

global A variable or function that is accessible

from any NewtonScript code.

grammar A set of rules deﬁning the format of

an entity to be recognized, such as a date, time,

phone number, or currency value. Lexical

dictionaries are composed of sets of grammars.

See also lexical dictionary.

home city The emporium the system uses to

modify dialing information, time zone, and so

on. It is usually the user’s home, but the user

may set it to another city when traveling.

immediate A value that is stored directly

rather than through an indirect reference to a

heap object. Immediates are characters, integers,

or Booleans. See also reference.

implementor The frame in which a method is

deﬁned. See also receiver.

In/Out Box The application that serves as a

central repository for all incoming and outgoing

data handled by the Routing and Transport

interfaces.

inheritance The mechanism by which

attributes (slots or data) and behaviors (methods)

are made available to objects. Parent inheritance

allows views of dissimilar types to share slots

containing data or methods. Prototype inheritance

allows a template to base its deﬁnition on that of

another template or prototype.

ink The raw data for input drawn by the user

with the stylus. Also known as raw ink or

sketch ink.

ink word The grouping of ink data created by

the recognition system, based on the timing and

spacing of the user’s handwriting. Ink words are

created when the user has selected “Ink Text” in

the Recognition Preferences slip. Ink words can

subsequently be recognized with deferred

recognition.

input spec A frame used in receiving endpoint

data that deﬁnes how incoming data should be

formatted; termination conditions that control

when the input should be stopped; data ﬁltering

options; and callback methods.

instantiate To make a run-time object in the

NewtonScript heap from a template. Usually

this term refers to the process of creating a view

from a template.

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