ThingLab
This is Alan Borning's ThingLab (1979) running on the Smalltalk-78 VM by Vanessa Freudenberg and Dan Ingalls
Mouse
Left-click: select ("red button")
Right-click: context menu ("yellow button")
Ctrl-click/middle-click: window menu ("blue button")
Keyboard
⌾: @ (make point)
←: _ (assignment)
⇑: ^ (return)
ⓢ: ` (backtick, 's operator)
↑: Ctrl-^ (Ctrl-6) ^^
¬: Ctrl-- (Ctrl-minus, unary minus, ¬1 instead of -1)
◢: Ctrl-] (Doit)
◦: Ctrl-A (At) ..
⦂: Ctrl-C (open Colon) ::
∢: Ctrl-E (Eye) <)
⇒: Ctrl-F (iF) =>
≥: Ctrl-G (Greater or equal) >=
Ctrl-H (backspace)
Ctrl-I (tab)
≤: Ctrl-L (Less or equal) <=
≠: Ctrl-N (Not equal) !=
↪: Ctrl-U (Unique string, symbol) #
ⓢ: Ctrl-S ('s operator, eval in object)
≡: Ctrl-T (Triple equal, identity) ==
➲: Ctrl-V (inVerse arrow)
◻: Ctrl-Q (sQuare)
▱: Ctrl-X (wiggly line)
#: ## (because # is ↪)
◣: (no keyboard binding)
Cmd-C/Alt-C: copy text
Cmd-V/Alt-V: paste text
Cmd-B/Alt-B: bold
Cmd-I/Alt-I: italic
Cmd-U/Alt-U: underline
Cmd-X/Alt-X: reset emphasis
Cmd-0...9, +/-: change font
Cmd-D doit
Cmd-P printit
Cmd-S compile
Cmd-J again
Cmd-A select all
Cmd-L cancel
Cmd-Z undo
Cmd-. interrupt
Tab/Shift-Tab indent/outdent selection
Ctrl-] do it in eval (Dispframe in the topleft corner)
Ctrl-d done with eval