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MIT ZWEI and Zmacs keybindings

There is no timeless Zmacs keymap. This reference separates the preserved System 46 evidence from the maintained System 303 restoration and records the table layer in which each binding originates. The companion architecture and feature article explains why mode, application, prefix, and parent tables must be composed to get an effective binding.

Notation and completeness

  • C-, M-, S-, and H- mean Control, Meta, Super, and Hyper. Sh- means Shift where case alone would be ambiguous.
  • Space, Return, Line, Form, Rubout, Help, Abort, Clear, and Break are Lisp Machine characters.
  • Multiple keys in one cell are source-defined aliases for the same command.
  • A range such as C-0 … C-9 represents the source's range form and is not a sampling shortcut.
  • “Complete fixed source tree” means that every non-comment fixed entry or generated range in the named System 303 subsystem appears below, including subordinate input/search, stream, and application tables. This page also specifies the source-visible reader-context TV interception, pointer hooks, Help subtrees and mode-composition algorithm. Dynamically loaded packages, patches, user initialization, and runtime mutation remain separately identified oracle layers; they are not silently included in the fixed-tree claim.

Beyond the standard, prefix, Zmacs, completing-reader, and general-mode tables, the fixed System 303 subordinate and special tables enumerated below contain 199 configured local slots: 164 direct commands, prefixes, or sentinels; 32 explicit lowercase aliases; and 3 explicit undefined leaves. The total is 19 minibuffer/pathname, 26 search, 8 editor-stream, 1 macro-mover, 135 application/task, and 10 Control-R/Recursive Edit/Standalone cells. These are constructor counts, not an effective-tree denominator. The exact generated alias algorithms and parent lookup below make every inherited or generated leaf derivable; named commands without keys remain a separate namespace.

Generated aliases and finite domains

Both releases use 160 keyboard codes (octal 000 through 237) by 16 modifier states. A newly created System 46 table preloads every lowercase ASCII letter, under every one of the 16 modifier states, with an alias to the corresponding uppercase code at the same modifier state: 26 × 16 generated cells before explicit specifications overwrite them.

A newly named System 303 table instead installs two exact compatibility families, without overwriting a non-NIL cell:

  1. each unmodified lowercase a through z aliases unmodified uppercase A through Z (26 candidates); and
  2. for uppercase A through Z, each of the seven Hyper-containing modifier states H-C, H-M, H-S, H-C-M, H-C-S, H-M-S, and H-C-M-S aliases the corresponding lowercase letter with Hyper removed and all other modifiers retained (182 candidates).

SET-COMTAB-CONTROL-INDIRECTION, used by the Standard Control-X tables and the search operator table where stated, then fills only still-NIL cells over that same 160 × 16 domain:

  1. ordinary Return, Linefeed, Tab, Backspace, Form, and Vertical Tab alias the corresponding Control code obtained by subtracting octal 100;
  2. every Meta-only and Control-Meta cell aliases the same code with Meta removed; and
  3. every Control-only cell whose code is outside ASCII @ through _ aliases the same unmodified code.

An alias stores a (modifier-state, code) destination. Lookup restarts that destination at the original top comtab, then applies explicit :UNDEFINED, parent fallthrough, and unbound behavior described below. Thus the algorithms, ordered direct tables, and parent chains are an exact finite mapping; aliases are not counted again as handwritten rows.

System 46 boundary and canonical built listing

The pinned System 46 tree can establish the complete preserved standard ZWEI and standard Control-X tables in comtab.115. It cannot establish a complete Zmacs overlay: nzwei.tags names DSK: NZWEI; ZMACS > and its initialization functions, but neither zmacs.* nor zmacs.qfasl is present in src/nzwei/. The later System 303 file is not substituted for this missing evidence.

For the built System 46 environment, the tracked _comnd.1 is the exhaustive generated named-command listing, including every direct invocation the running self-documenter reported. The accompanying emacs.comdif and nzwei.comdif record the supplied compatibility and change descriptions. These artifacts are more faithful than relabeling the System 303 tables below as System 46.

Static audit of the 25 source-present files among 31 active ZWEI modules found 345 concrete unique DEFCOM declarations plus 17 mode-generated entry commands, for 362 source-defined command symbols; 11 major modes, 6 minor modes, and 450 literal expanded SET-COMTAB assignments. The six declared but absent modules are SEARCH, SCREEN, STREAM, SECTIO, ZMACS, and ZYMURG; that gap is why the count is explicitly “source-present,” not a whole-release claim.

Complete preserved System 46 Standard table

The following grouped rows enumerate every active fixed Standard cell and range in comtab.115. They are not a delta inferred from System 303.

Binding(s) Command(s), in binding order
unmodified codes 000–177 octal; Backspace Standard insertion
C-F, C-B, C-N, C-P Forward; Backward; Down Real Line; Up Real Line
C-V, M-V, C-M-V Next Screen; Previous Screen; Scroll Other Window
C-A, C-E, M-R, M-<, M-> Beginning Of Line; End Of Line; Move To Screen Edge; Goto Beginning; Goto End
C-<, C->, C-Space/C-@, M-Space, C-M-Space Mark Beginning; Mark End; Set Pop Mark; Push Pop Point Explicit; Move To Previous Point
Return, C-O, C-M-O, M-O, M-^/C-M-^ Insert CRs; Make Room; Split Line; This Indentation; Delete Indentation
C-D, Rubout, C-Rubout, C-K, Clear Delete Forward; Rubout; Tab Hacking Rubout; Kill Line; Clear
Break Break
M-W, C-W, C-M-W, C-Y, M-Y Save Region; Kill Region; Append Next Kill; Yank; Yank Pop
C-L, Form/C-M-! Recenter Window; Complete Redisplay
C-U Quadruple Numeric Arg
C--, M--, C-M-- Negate Numeric Arg
C-0…C-9, M-0…M-9, C-M-0…C-M-9 Numbers
C-T, M-T, C-M-T Exchange Characters; Exchange Words; Exchange Sexps
M-F, M-B, M-K, M-D, M-Rubout, M-@ Forward Word; Backward Word; Kill Sentence; Kill Word; Backward Kill Word; Mark Word
C-M-F, C-M-N, C-M-B, C-M-P Forward Sexp; Forward List; Backward Sexp; Backward List
C-M-K, C-M-Rubout, C-M-@ Kill Sexp; Backward Kill Sexp; Mark Sexp
C-M-), C-M-(/C-M-U Forward Up List; Backward Up List
C-M-[/C-M-A, C-M-]/C-M-E, C-M-D Beginning Of Defun; End Of Defun; Down List
M-), M-( Move Over ); Make ()
M-], M-[, M-H, M-E, M-A Forward Paragraph; Backward Paragraph; Mark Paragraph; Forward Sentence; Backward Sentence
C-G Beep
Tab/M-Tab, C-M-Tab, C-Tab, Line Insert Tab; Indent For Lisp; Indent Differently; Indent New Line
C-M-Q Indent Sexp
C-;/M-;, C-M-;, M-N, M-P Indent For Comment; Kill Comment; Down Comment Line; Up Comment Line
M-Q, M-G Fill Paragraph; Fill Region
M-\, C-M-\ Delete Horizontal Space; Indent Region
M-Return/M-M/C-M-Return/C-M-M Back To Indentation
M-U, M-L, M-C Uppercase Word; Lowercase Word; Uppercase Initial
M-Form, M-S, M-=, C-= Insert Form Feed; Center Line; Count Lines Region; Fast Where Am I
C-S, C-R Incremental Search; Reverse Incremental Search
M-033 raw Evaluate Mini Buffer
C-006 Compile Defun
C-022, M-022, C-M-022 Evaluate Defun; Evaluate Defun Verbose; Evaluate Defun Hack
C-?/M-?, C-M-?/Help Self Document; Documentation
C-Q Various Quantities
M-X, C-M-X Extended Command; Any Extended Command
M-Line Indent New Comment Line
C-%, M-% Replace String; Query Replace
C-M-H, C-M-R, M-' Mark Defun; Reposition Window; Upcase Digit
C-035 raw Find Pattern
C-Z, End Quit
M-~ Not Modified
C-M-&, C-M-$ Frob Lisp Conditional; Frob Do
C-034, C-036, M-036 Quick Arglist; Brief Documentation; Long Documentation
C-J, M-J, C-M-J Change Font Char; Change Font Word; Change Default Font
M-#, M-_, C-M-# Text Justifier Change Font Word; Text Justifier Underline Word; Goto Character
Mouse-1-1/Mouse-1-2 Mouse Mark Region; Mouse Move Region
Mouse-2-1/Mouse-2-2 Mouse Mark Thing; Mouse Kill Yank
C-X enter the System 46 Standard Control-X child

The source repeats C-< and C->; later identical assignments do not change their effective commands. Commented Form recenter and C-M-G Format Code forms are not bindings.

Complete preserved System 46 Control-X and recursive contexts

Binding(s) Command(s), in binding order
C-X C-G, C-X C-D, C-X C-N, C-X C-P, C-X C-X Prefix Beep; Display Directory; Set Goal Column; Mark Page; Swap Point And Mark
C-X G, C-X X, C-X L Open Get Q Register; Put Q Register; Count Lines Page
C-X Rubout, C-X ;, C-X ., C-X F Backward Kill Sentence; Set Comment Column; Set Fill Prefix; Set Fill Column
C-X C-U, C-X C-L, C-X C-O, C-X C-I Uppercase Region; Lowercase Region; Delete Blank Lines; Indent Rigidly
C-X =, C-X [, C-X ], C-X H, C-X C-C Where Am I; Previous Page; Next Page; Mark Whole; Quit
C-X C-J Change Font Region
C-X (, C-X ), C-X E, C-X Q Start/End/Call Keyboard Macro; Keyboard Macro Query
C-X 033 raw, C-X C-T, C-X T Repeat Last Mini Buffer Command; Exchange Lines; Exchange Regions
C-X #, C-X _, C-X C-M-Space Text Justifier Change Font Region; Text Justifier Underline Region; Move To Default Previous Point

The System 46 prefix has no Help or Abort leaf. Control indirection supplies the source-defined plain/controlled compatibility aliases; an unknown second key follows ordinary undefined behavior.

Context Complete local cells; every other cell inherits Standard
Completing reader raw 033 Complete; Space and ) Self Insert And Complete; ? List Completions; C-Q Quoted Insert; Help Document Completing Read; C-/ Completion Apropos; Return/C-Return/End Complete And Exit; C-G Mini Buffer Beep; Mouse-1-1 End Of Mini Buffer; Mouse-3-1 List Completions; C-Z/M-Z/C-M-Z hard undefined
Control-R C-033 and End Exit Control-R
Recursive Edit C-033 and End Exit Control-R; C-G Recursive Edit Beep
Standalone C-033 Quit

The public source also constructs two ordinary minibuffer tables that were separate from the completing reader:

Context Complete local cells; every other cell follows the stated parent
Multi-line minibuffer Help Document Containing Command; C-Return and End End Of Mini Buffer; C-G Mini Buffer Beep; C-Z, M-Z, and C-M-Z hard undefined; C-M-Y Pop Mini Buffer Ring; Mouse-1-2 Mouse End Of Mini Buffer; parent Standard
Single-line minibuffer Return End Of Mini Buffer; parent multi-line minibuffer

The multi-line table has nine direct cells and the single-line child one. This is public fixed evidence and does not depend on the missing System 46 Zmacs module.

Complete System 46 Help subtree

Help enters a staged dispatcher: A Apropos, B basic ZWEI documentation, C Self Document followed by any key or prefix subtree, D Describe Command, L What Lossage, U Undo, V Variable Apropos, W Where Is, Space repeat the preceding request, and ? describe the Help dispatcher. C-G aborts; every other input beeps and prompts again. Self Document follows a prefix closure recursively, and * at that stage enumerates every leaf of the selected prefix.

System 303 standard ZWEI table

Insertion, movement, and marking

Binding(s) Command
unmodified character range 0–177 octal Ordinarily Self Insert
Backspace Ordinarily Self Insert
C-F, C-B Forward; Backward
C-N, C-P Down Real Line; Up Real Line
C-V, M-V, C-M-V Next Screen; Previous Screen; Scroll Other Window
C-A, C-E Beginning Of Line; End Of Line
M-R, M-<, M-> Move To Screen Edge; Goto Beginning; Goto End
C-Space, C-@ Set Pop Mark
M-Space Push Pop Point Explicit
C-M-Space Move To Previous Point
C-<, C-> Mark Beginning; Mark End

Newlines, deletion, killing, and yanking

Binding(s) Command
Return Insert CRs
C-O, C-M-O Make Room; Split Line
M-O This Indentation
M-^, C-M-^ Delete Indentation
C-D, Rubout, C-Rubout Delete Forward; Rubout; Tab Hacking Rubout
C-K, Clear Kill Line; Clear
M-W, C-W, C-M-W Save Region; Kill Region; Append Next Kill
C-Y, M-Y Yank; Yank Pop

Redisplay, arguments, and transposition

Binding(s) Command
Break Break into Lisp
C-L Recenter Window
Form, C-M-! Complete Redisplay
C-U Universal Argument
C--, M--, C-M--, S--, S-C--, S-M--, S-C-M--, H--, H-M--, H-C-M--, H-S--, H-S-C--, H-S-M--, H-S-C-M-- Negate Numeric Arg
H-C-- No source-installed leaf in this profile
digits 0–9 under each source-listed Control/Meta/Super/Hyper modifier combination Numbers
C-T, M-T, C-M-T Exchange Characters; Exchange Words; Exchange Sexps

The source spells C-- twice and never spells H-C--. By contrast, the digit ranges do include H-C-0 through H-C-9. This asymmetry is part of the strict source profile and MUST NOT be silently regularized. The digit rows are stated as generated families because each source form creates a complete ten-digit range.

Words, lists, definitions, paragraphs, and sentences

Binding(s) Command
M-F, M-B Forward Word; Backward Word
M-K, M-D, M-Rubout, M-@ Kill Sentence; Kill Word; Backward Kill Word; Mark Word
C-M-F, C-M-B Forward Sexp; Backward Sexp
C-M-N, C-M-P Forward List; Backward List
C-M-K, C-M-Rubout, C-M-@ Kill Sexp; Backward Kill Sexp; Mark Sexp
C-M-), C-M-(, C-M-U Forward Up List; Backward Up List; Backward Up List
C-M-A, C-M-[ Beginning Of Defun
C-M-E, C-M-] End Of Defun
C-M-D Down List
C-(, C-) Find Unbalanced Parentheses; Show List Start
M-(, M-) Make (); Move Over )
C-M-Sh-K Delete ()
C-M-Sh-F, C-M-Sh-B Grow List Forward; Grow List Backward
M-], M-[, M-H Forward Paragraph; Backward Paragraph; Mark Paragraph
M-E, M-A Forward Sentence; Backward Sentence

Indentation, comments, filling, case, and layout

Binding(s) Command
C-G Beep
Tab, M-Tab Insert Tab
C-M-Tab, C-Tab Indent For Lisp; Indent Differently
Line Indent New Line
C-M-Q Indent Sexp
C-;, M-;, C-M-; Indent For Comment; Indent For Comment; Kill Comment
M-N, M-P Down Comment Line; Up Comment Line
C-Sh-M, M-Sh-M Macro Expand Expression; Macro Expand Expression All
M-Q, M-G Fill Paragraph; Fill Region
C-\, M-\, C-M-\ Just One Space; Delete Horizontal Space; Indent Region
M-Return, M-M, C-M-Return, C-M-M Back To Indentation
M-U, M-L, M-C Uppercase Word; Lowercase Word; Uppercase Initial
M-Form Insert Form Feed
M-S Center Line
M-=, C-= Count Lines Region; Fast Where Am I

Search, evaluation, help, exit, and system operations

Binding(s) Command
C-S, C-R Incremental Search; Reverse Incremental Search
M-Escape Evaluate Mini Buffer
Control-006 (octal), C-Sh-C Compile Region
C-Sh-E, M-Sh-E, C-M-Sh-E Evaluate Region; Evaluate Region Verbose; Evaluate Region Hack
M-? Self Document
C-M-?, Help, C-Help Documentation
C-Q Quoted Insert
M-X, C-M-X Extended Command; Any Extended Command
C-Sh-X Various Quantities
M-Line Indent New Comment Line
C-%, M-% Replace String; Query Replace
C-M-H, C-M-R Mark Defun; Reposition Window
M-' Upcase Digit
C-Sh-S Lisp Match Search
C-Z, Abort Quit; Abort At Top Level
C-M-&, C-M-$ Frob Lisp Conditional; Frob Do
C-Sh-A Quick Arglist
C-Sh-D, M-Sh-D Quick Documentation; Long Documentation
C-Sh-V Describe Variable At Point

C-? and End appear near these entries only as commented-out forms in the pinned source; they are not counted as bindings.

Fonts, spelling, printing, undo, and mouse

Binding(s) Command
C-J, M-J, C-M-J Change Font Char; Change Font Word; Change Default Font
C-Sh-J, M-Sh-J Change Font Region; Change One Font Region
M-#, M-_ Text Justifier Change Font Word; Text Justifier Underline Word
M-$ Correct Word Spelling
C-M-# Goto Character
M-Sh-P Quick Print Buffer
C-Sh-U, C-Sh-R Quick Undo; Quick Redo
Mouse-1-1, Mouse-1-2 Mouse Mark Region; Mouse Move Region
Mouse-2-1, Mouse-2-2 Mouse Mark Thing; Mouse Kill Yank
C-X Enter Standard Control-X table; Zmacs replaces this leaf with its child table.

System 303 standard Control-X table

This table has Control indirection, so on a key with no explicit Control entry, the controlled spelling can fall back to its plain spelling according to SET-COMTAB-CONTROL-INDIRECTION.

Binding Command
C-X C-G Prefix Beep
C-X C-D Display Directory
C-X C-N Set Goal Column
C-X C-P Mark Page
C-X C-X Swap Point And Mark
C-X G, C-X X Get Register; Put Register
C-X S, C-X J Save Position In Register; Jump To Register Position
C-X L Count Lines Page
C-X Rubout Backward Kill Sentence
C-X C-;, C-X ; Comment Out Region; Set Comment Column
C-X ., C-X F Set Fill Prefix; Set Fill Column
C-X C-U, C-X C-L Uppercase Region; Lowercase Region
C-X C-O, C-X C-I Delete Blank Lines; Indent Rigidly
C-X = Where Am I
C-X [, C-X ] Previous Page; Next Page
C-X H Mark Whole
C-X C-C Quit
C-X C-J Change Font Region
C-X (, C-X ) Start Keyboard Macro; End Keyboard Macro
C-X E, C-X Q Call Last Keyboard Macro; Keyboard Macro Query
C-X Escape Repeat Mini Buffer Command
C-X C-T, C-X T Exchange Lines; Exchange Regions
C-X U Unexpand Last Word
C-X #, C-X _ Text Justifier Change Font Region; Text Justifier Underline Region
C-X C-M-Space Move To Default Previous Point
C-X Help Document Containing Prefix Command
C-X Abort Prefix Abort

Word Abbrev mode additionally installs C-X C-A Add Mode Word Abbrev, C-X M-' Word Abbrev Prefix Mark, and C-X + Add Global Word Abbrev, while reasserting C-X U Unexpand Last Word. The source mutates the standard prefix, which is a non-obvious global consequence of enabling this minor mode.

System 303 Zmacs overlays

The top-level Zmacs table inherits the standard table. These entries replace or add to it:

Binding Zmacs command
C-M-V Scroll Other Window
C-Sh-P Go To Next Possibility
C-Sh-W, M-Sh-W Edit Next Warning; Edit Previous Warning
M-~ Not Modified
M-. Edit Definition
C-M-. Edit Zmacs Command
C-M-L Select Previous Buffer
C-X Enter the Zmacs Control-X child table
Mouse-3-1 Open the Zmacs editor menu

The editor menu has this exact source order:

Mouse-3-1
├─ Arglist
├─ Edit Definition
├─ List Callers
├─ List Sections
├─ List Buffers
├─ Kill Or Save Buffers
├─ Edit Buffers
├─ Split Screen
├─ Compile Region
├─ Indent Region
├─ Change Default Font
├─ Change Font Region
├─ Uppercase Region
├─ Lowercase Region
├─ Mouse Indent Rigidly
└─ Mouse Indent Under

The Zmacs Control-X table inherits the standard prefix and supplies these editor-specific leaves:

Binding Zmacs command
C-X C-F, C-X C-V Find File; Find Alternate File
C-X B Select Buffer
C-X C-W, C-X C-S Write File; Save File
C-X C-Q Toggle Read Only
C-X C-B, C-X K List Buffers; Kill Buffer
C-X A Append To Buffer
C-X 1, C-X 2 One Window; Two Windows
C-X 3, C-X 4 View Two Windows; Modified Two Windows
C-X ^, C-X O Grow Window; Other Window
C-X M, C-X D Mail; Dired for current file
C-X V View File
C-X 8 Two Windows Showing Region
C-X C-M-L Select Default Previous Buffer

Minibuffer and special editor contexts

Completing reader

Binding(s) Command
Escape Complete
Space, . Self Insert And Complete
C-? List Completions
C-Q Quoted Insert
Help Document Completing Read
C-/ Completion Apropos
Return, C-Return Complete And Exit
C-G Mini Buffer Beep
Abort Recursive Edit Abort
End Complete And Exit If Unique
Mouse-1-1, Mouse-3-1 Mouse End Of Mini Buffer; Mouse List Completions
C-Sh-Y, C-M-Y, M-Sh-Y Yank Default String; Yank Previous Input; Pop Mini Buffer History
C-Sh-F Specify File Buffer
C-Z, M-Z, C-M-Z Explicitly undefined in this context

Control-R, Recursive Edit, and Standalone are independent tables created by SET-COMTAB; each inherits Standard rather than another table in this group:

Context Direct local cells
Control-R C-Escape, End, Abort Exit Control-R
Recursive Edit C-Escape, End Exit Control-R; C-G Recursive Edit Beep; Abort Recursive Edit Abort
Standalone End, C-Escape Quit; Abort Standalone Abort

They contribute 3, 4, and 3 direct cells respectively to the 199-cell special and subordinate denominator.

Minibuffer and pathname overlays

Context Binding(s) Command or value
Multi-line minibuffer Help Document Containing Command
Multi-line minibuffer C-Return, End End Of Mini Buffer
Multi-line minibuffer C-G; Abort Mini Buffer Beep; Recursive Edit Abort
Multi-line minibuffer C-Sh-Y; C-M-Y Yank Default String; Yank Previous Input
Multi-line minibuffer C-Sh-S; M-Sh-Y Yank Search String; Pop Mini Buffer History
Multi-line minibuffer Mouse-1-2 Mouse End Of Mini Buffer
Multi-line minibuffer C-Z, M-Z, C-M-Z Explicitly undefined
Single-line minibuffer Return End Of Mini Buffer
Pathname reader Escape; C-? Pathname Complete; Pathname List Completions
Pathname reader C-Sh-Y Yank Default Pathname
Pathname reader End; Help Pathname Complete And Exit If Unique; Document Pathname Read

These are 19 local cells: 13 multi-line, one single-line, and five pathname. Multi-line inherits Standard, single-line inherits multi-line, and pathname inherits single-line. The files alternate among the reader names CR, Return, and Newline; System 303 maps those three names to the same base character, octal 215. The table distinction here is the Control modifier: multi-line input binds C-Return, while its single-line child adds ordinary Return.

Extended-search hierarchy

Context Binding(s) Command
Search C-H child (; ) Extended Search Open; Close
Search C-H child source byte 037 octal, C-O Extended Search Or
Search C-H child source byte 004 octal, &, C-A Extended Search And
Search C-H child C-N, ~, source byte 005 octal Extended Search Not
Search C-H child Space; -; A; *; C-X Extended Search Whitespace; Delimiter; Alphabetic; Some; Any
Search C-H child Help Document Containing Prefix Command
Search minibuffer Help; C-H Document Extended Search; enter Search C-H child
String-search C-H child C-B, C-E Extended Search Beginning; End
String-search C-H child C-F, C-R Extended Search Top Line; Reverse
Multi-line string search Escape; Help; C-H End Of Mini Buffer; Document Extended Search; enter string-search child
Single-line string search Return End Of Mini Buffer

These are all 26 direct local assignments. The three source bytes are retained as literal observations rather than relabeled as modern key names. Search C-H has generated Control indirection but no parent comtab. The search minibuffer inherits the single-line minibuffer; the string-search C-H child inherits search C-H; multi-line string search inherits the multi-line minibuffer; and single-line string search inherits multi-line string search.

Editor-stream and keyboard-macro-mover tables

Context Binding(s) or event Command
Editor stream End, C-Return Activate
Editor stream Clear; Page Stream Clear; Recenter To Top
Editor stream C-M-Y, C-C; M-C Yank Input History; Yank Pop
Editor stream C-Sh-A Quick Arglist Into Buffer
Keyboard-macro mover synthetic integer -1 Exit Keyboard Macro Mover

The editor-stream table has eight local cells, inherits Standard, and supplies the named but unkeyed Require Activation Mode. The mover entry is an internal terminator, not a physical key. Its one-cell sparse table inherits the active comtab, allowing recorded motion commands to retain their caller's context until replay emits -1.

Major-mode key deltas in System 303

Bindings not listed here are inherited from Zmacs/standard tables. Syntax, variables, hooks, and named commands are summarized in the system article even when a mode installs no direct key.

Mode Direct local bindings
Lisp Tab Indent For Lisp; Rubout Tab Hacking Rubout; C-Rubout Rubout; M-Z Compile And Exit; C-M-Z Evaluate And Exit
Scheme Lisp-style Tab/Rubout pair; Break Scheme Break; M-. Scheme Edit Definition
T Lisp-style Tab/Rubout pair; M-. Scheme Edit Definition
MIDAS Tab Insert Tab; C-M-A/E go to accumulator/address field; C-M-D Kill Terminated Word; C-M-N/P next/previous label
Text Tab Tab To Tab Stop
Bolio Text Tab; C-M-0 … C-M-9 Bolio Into Font; C-M-: and C-M-* Bolio Outof Font; C-M-Space Expand Only
Fundamental No direct local binding
PL1 Tab Indent For PL1; C-M-H Roll Back PL1 Indentation; Control-036 (octal; Top-D) PL1DCL
Electric PL1 PL1 bindings plus ; Electric Semicolon, : Electric Colon, # Rubout, @ Clear, and \ Various Quantities
C Hyper-. Edit C Definition; named Read C Tags File command
TECO Tab Indent Nested; M-' Forward TECO Conditional; M-" Backward TECO Conditional
Macsyma Tab Indent Nested; local list syntax supplies the rest of the behavior
TeX Tab Stupid Tab; local TeX delimiter, escape, word, and comment syntax

Application and task-mode tables in System 303

These sparse overlays inherit the active editor tables. They account for the remaining 135 fixed subordinate slots: 103 direct commands or prefixes and 32 explicit lowercase aliases. Named commands without keys are not included in that denominator.

Mail minor-mode overlay

Binding(s) Command
C-Escape, End Exit Com Mail
Abort, C-] Quit Com Mail
Tab Tab To Tab Stop
H-F, H-B Forward Address; Backward Address
H-K, H-Rubout Kill Address; Backward Kill Address
H-T Exchange Addresses
C-X Enter the Mail Control-X child table
C-X A, C-X C, C-X S, C-X T Add More Text; Add CC Field; Add Subject Field; Add To Field

These are 15 fixed cells: ten top-level leaves, the C-X prefix, and four child leaves. The Mail child inherits the Zmacs Control-X table, so normal file and window commands remain available where Mail does not replace them.

Dired

Binding(s) Command
Space Down Real Line
! Dired Next Undumped
@, #, $ Complement the do-not-delete, do-not-supersede, and do-not-reap flags
., , Change File Properties; Print File Attributes
=, source byte 036 octal SRCCOM against the newest version; SRCCOM File against a selected file
?, Help Dired Documentation
A, a Apply Function
C, c Copy
D, d, C-D, K, k, C-K Mark for deletion
E, e; C-Sh-E Edit File, entering Dired for a directory; Edit File in two windows
F, f Find File
H, h Automatic cleanup marking
L, l Load File
N, n Next Hog
P, p Print File
Q, q, End Exit and process requested operations
R, r Rename
S, s Show or remove a subdirectory
U, u Undelete
V, v View File, or open a directory view for a directory
X, x Execute requested operations without leaving Dired
0–9 Numbers
<, > Edit Superior Directory; go to most recent version
Rubout Reverse Undelete
Abort Abort Dired
Mouse-3-1 Dired Mouse Menu

This is the complete 62-cell local Dired table: 46 direct cells and 16 lowercase aliases. The source byte is reported as encoded evidence rather than assigned a modern host-key label.

BDIRED directory-difference editor

Binding(s) Command
Space Down Real Line
= Dired SRCCOM
?, Help BDIRED Documentation
C, c Dired Copy
P, p BDIRED Print Transfer
Q, q, End Exit BDIRED
R, r Dired Rename
T, t BDIRED Transfer
U, u BDIRED Unmark
V, v Dired View File
Rubout BDIRED Reverse Unmark
Abort Abort BDIRED

These are all 21 local cells: 14 direct and seven lowercase aliases. I and i forms for Resolve Inconsistency are commented out in this revision and are not bindings.

Edit Buffers

Binding(s) Command
Space Down Real Line
S, s; W, w; R, r Save; Write; Revert
~ Unmodify
K, k, D, d, C-K, C-D Mark buffer for deletion
. Select Buffer
U, u Undelete
N, n Suppress File I/O
P, p Print
Help Edit Buffers Help
Rubout Reverse Undelete
Abort Abort Edit Buffers
End, Q, q Exit Edit Buffers

This is the complete 27-cell table: 18 direct cells and nine lowercase aliases.

Possibilities, Warnings, and ZTOP

Context Binding(s) Command
Possibilities C-/ Go To Possibility
Warnings C-/ Go To Warning
ZTOP End, C-Return Finish ZTOP Evaluation
ZTOP Abort, M-Abort ZTOP Abort; ZTOP Abort All
ZTOP C-M-Y ZTOP Yank Input History
ZTOP Tab Indent For Lisp
ZTOP Rubout, C-Rubout Tab Hacking Rubout; Rubout

The two navigation modes each have one local leaf; ZTOP has eight. ZTOP also installs command hooks and advertises its input state in the mode line, so its activation behavior is not reducible to these eight keys.

One static-source trap is worth recording. poss.lisp defines KEY-FOR-COMMAND-SET-C-., which first binds global Zmacs C-. to Beep and then retargets it to a caller-supplied command. That mutation is runtime-dependent; there is no single timeless C-. binding to put in this release table. Possibilities callers retarget it to Go To Next Possibility, while the warning workflow retargets it to Edit Next Warning.

Static audit of all 42 declared System 303 ZWEI files found 671 concrete unique commands plus 31 mode-generated entry commands, for 702 source-defined command symbols; 19 major modes, 12 minor modes, and 800 literal expanded SET-COMTAB assignments.

Minor-mode deltas in System 303

Mode Binding or behavioral delta
Return Indents Return Indent New Line; Line Insert CRs
Atom Word Redirect word syntax to Lisp atom syntax; no direct key
Emacs C-^, Escape, C-C become Control/Meta/Control-Meta prefix characters; C-I, C-H, C-] alias Tab, Backspace, Abort
Any Bracket Treat square and curly brackets as list delimiters; no direct key
Auto Fill Post-command hook fills after configured activation characters
Overwrite Replaces the ordinary self-insert command with Self Overwrite
Word Abbrev Expansion hook plus the Control-X additions listed above
Electric Shift Lock Hook uppercases inserted letters outside comments and strings
Electric Font Lock Hook changes comment font
Mail The 15-cell Mail and Mail Control-X overlay listed above
Require Activation modes Editor-stream/ZTOP contexts require an explicit activation command before buffered input runs

Mode-composition order

System 303 major and minor modes do not form independent immutable maps. Every active mode writes a shared sparse mode table and, when needed, a shared mode Control-X table. A newly enabled mode therefore wins a collision with an older mode. To disable an older mode, ZWEI:

  1. unwinds every newer mode;
  2. unwinds the target mode;
  3. removes the target from the active order; and
  4. reapplies the newer modes in their original order.

This transaction preserves temporal precedence. An effective-tree dump MUST record mode activation order, not merely the set of mode names.

System 303 effective ingress and pointer overlays

The fixed cells above are only one layer of the effective editor tree. The active reader decides whether synchronous TV interception is enabled:

raw TV input
└─ active input reader
   ├─ ordinary command or child-prefix read under
   │  WITHOUT-IO-BUFFER-OUTPUT-FUNCTION
   │  ├─ active dynamic mouse hook -> hook-owned pointer result
   │  └─ mode table -> Zmacs table -> Standard table
   │     └─ C-X: mode C-X -> Zmacs C-X -> Standard C-X
   │        (Abort/Meta-Abort/Break/Meta-Break are ordinary lookup candidates)
   └─ read outside that dynamic suppression
      ├─ Abort      -> editor intercept -> TV Abort
      ├─ Meta-Abort -> editor intercept -> TV Abort All
      ├─ Break      -> editor intercept -> TV Break
      ├─ Meta-Break -> editor intercept -> TV Error Break
      └─ other input -> reader-specific handling

The ordinary editor does install the four TV intercepts around its command loop. However, WITHOUT-IO-BUFFER-OUTPUT-FUNCTION dynamically binds TV:KBD-INTERCEPTED-CHARACTERS to NIL, explicitly inhibiting synchronous Break, Abort, and related interception. The ordinary command read and the child-prefix read both use this wrapper. Their Standard, local, or parent Break and Abort cells are therefore effective; a missing cell can still become undefined after normal parent lookup. A read outside the wrapper retains the installed intercept path. The wrapper does not affect asynchronous characters such as Control-Abort.

On the intercept branch, a returning Break completes typeout and redisplays editor windows unless the break remains recursive or the typeout window was selected. Abort paths complete query/typeout state before delegating to TV. An effective-tree dump MUST attach the reader context to these leaves rather than globally placing the four intercepts either above or below every comtab.

An absent comtab cell falls through to the parent. An explicit :UNDEFINED stops lookup. An alias restarts resolution from the original top table, so a top-level override can change the destination reached by an inherited alias. Either unbound result clears queued input and reports a not-defined key; a command symbol without a function binding reports the distinct not-implemented case.

Read Function Name pointer hook

While Read Function Name has an empty minibuffer, it installs a dynamic hook ahead of ordinary pointer-table dispatch:

Preconditions Gesture Result
pointed highlighted atom passes the source predicate Mouse-1-1 copy the name, remove the hook, and return it immediately
same Mouse-3-1 copy the name, put point after it, remove the hook, and continue editing

Pointer routing also has pane precedence. A click in an unselected frame selects that frame first. In a selected frame but noncurrent editor pane, Mouse-1-1 normally selects the pane without running its ordinary editing command; other buttons dispatch in the clicked pane. During that dispatch, the clicked window and interval are the current dynamic editing context. A minibuffer exception can select the Standard table so an unrelated application overlay does not capture minibuffer input.

System 303 Help subtree

Help is a command tree:

Input Help operation
C Self Document, then read any key or recurse into a prefix
D Describe Command
A Apropos in the current mode
U Undo help
V Variable Apropos
W Where Is
L What Lossage, only when playback support is available
Space repeat the preceding Help request
Help describe Help itself
C-G or Rubout abort Help
any other input beep and prompt again

Self Document follows aliases and prefix commands. * after selecting a prefix enumerates all reachable leaves in that prefix. C-X Help directly documents the active prefix table. The stored prior Help character initializes to B, although this System 303 dispatcher has no B operation. Therefore Space as the first request substitutes B, finds no dispatch function, and loops to print the Help prompt again without an explicit beep. After a valid request, Space repeats the stored request; that stored value persists in the editor closure until another non-Space request changes it.

The command body contains a later ?-or-Help test, but the input reader accepts only the dispatcher alist, Space, and Help. Because ? is absent from that alist, it never reaches the test: it takes the invalid-input path, beeps, and prompts again. Dired and BDIRED still bind an initial ? directly to their documentation commands; once inside this shared dispatcher, a following ? is likewise invalid.

Runtime check

In the isolated System 303 load band, the harness evaluated (LIST (FBOUNDP 'ED) (FBOUNDP 'ZWEI:ED) (FIND-PACKAGE "EINE") (FIND-PACKAGE "ZWEI")) and received (T T NIL #<Package ZWEI ...>). (ED T) then displayed ZMACS (LISP) * *Buffer-2*. Typing a Lisp definition, pressing Help, and invoking Meta-X produced the live editor Help dispatcher, Help menu, and Extended command: prompt. Text Mode visibly changed the mode line to ZMACS (Text), and Lisp Mode changed it back. This confirms the high-level input paths, active editor identity, and executable mode transition; it does not exhaustively execute every table leaf. Four selected screenshots have passed the repository's capture-specific rights review and are tracked in the curated CADR screenshot catalog; the architecture article records their actions and evidentiary limits.

Sources

Try “search window system”, “open genera”, or “help”.