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Types Summary

Each separate data type is documented in its own section, this is a just a table of the more common types.

Integer
32-bit signed integers. See section Numbers.
Cons cell
An object containing two other Lisp objects. See section Cons Cells.
List
A sequence of objects, in Lisp lists are not primitive types, instead they are made by chaining together Cons cells. See section Lists.
Vector
A one-dimensional array of objects. See section Vectors.
String
A vector of characters. See section Strings.
Array
An ordered sequence of objects which can be accessed in constant time, either a vector or a string. See section Sequences.
Sequence
An ordered sequence of objects, either a list or an array. See section Sequences.
Symbol
A symbol is a named object; they are used to provide named variables and functions. See section Symbols.
File
A link to a file in the operating system's filing system, allows access to the file as a stream. See section Files.
Stream
Serial data sinks and sources. See section Streams.
Void
No type, only used in symbols to represent an unset function or variable value.
Buffer
A "space" in which text can be edited, buffers may be displayed in a window and hence edited by the user. See section Buffers.
Window
A physical window in the underlying window-system, used for input and output.
Position
A pair of integers, used to represent the coordinates of a character in a buffer. See section Positions.
Mark
A position in a specified file, this file may either be a buffer in memory or a named file. See section Marks.
Process
An object through which processes may be created and controlled. See section Processes.
Glyph Table
A lookup-table which is used to map characters in a buffer to the sequence of glyphs they are rendered as. See section Glyph Tables.
Keymap
A set of key-sequence-to-command mappings; when installed in a buffer it controls how the editor reacts to all input from the user. See section Keymaps.
Event
An (input-) event from a window.


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