Shortcuts
Documentation link: http://poseidon.arma3.fr/documentation/shortcuts/

Misc
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ctrl+g display snippets
alt+e display online help about the selected command (in English)
alt+f display online help about the selected command (in French)
ctrl+shift+t reopen last closed file
ctrl+ / comment/un-comment current line
alt+d open file under caret
alt+b Toggle high visibility of current scope

Editing
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ctrl+C copy current line (if no selection)
ctrl+X cut current line (if no selection)
ctrl+shift+K delete line
ctrl+↩ insert line after
ctrl+shift+↩ insert line before
ctrl+shift+↑ move line (or selection) up
ctrl+L select line (repeat to select next lines)
ctrl+D select word (repeat select others occurrences in context for multiple editing)
ctrl+M jump to closing bracket for current code, repeat to jump to opening bracket
ctrl+shift+M select all contents of the current brackets (curly brackets, square brackets, parentheses)
ctrl+KK delete from cursor to end of line
ctrl+K+⌫ delete from cursor to start of line
ctrl+] indent current line(s)
ctrl+[ un-indent current line(s)
ctrl+shift+D duplicate line(s)
ctrl+J join line below to the end of the current line
ctrl+shift+/ block comment current selection
ctrl+Y redo, or repeat last keyboard shortcut command
ctrl+shift+V paste and indent correctly
ctrl+Space select next auto-complete suggestion
ctrl+U soft undo (somehow undoes your movements; it jumps to your last change before undoing it when you repeat this command)

Edition/Line
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ctrl+] Indent
crtl+[ Unindent
ctrl+shift+up Swap line up
ctrl+shift+down Swap line down
ctrl+shift+d Duplication line
ctrl+shift+k Delete line
ctrl+j Join lines

Edition/Line
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ctrl+/ Toggle comment
ctrl+shift+/ Toggle block comment

Edition/Tags
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alt+. Close tag
ctrl+shift+a Expand selection to tag
alt+shift+w Wrap selection with tag

Edition/Tags
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ctrl+k, ctrl+space Set mark
ctrl+k, ctrl+a select to mark
ctrl+k, ctrl+w delete to mark
ctrl+k, ctrl+x swap with mark
ctrl+k, ctrl+g clear mark

Edition/Tags
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ctrl+shift+[ Fold
ctrl+shift+] Unfold
ctrl+k, ctrl+1 Fold all
ctrl+k, ctrl+2 Fold level 2
ctrl+k, ctrl+3 Fold level 3
ctrl+k, ctrl+n Fold level n
…
ctrl+k, ctrl+9 Fold level 9
ctrl+k, ctrl+t Fold tag attributes

Navigation/Goto Anywhere
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ctrl+P quick-open files by name in your project (doesn’t seem to need an actual project set up, it just searches in the directories around the currently-opened file
ctrl+R goto symbol (functions and classes) in the file. Same as ctrl+P, then type @
ctrl+; goto word in current file. Same as ctrl+P, then type
ctrl+G goto line in current file. Same as ctrl+P, then type :

General
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ctrl+shift+P command prompt
ctrl+KB toggle side bar

Find/Replace
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ctrl+F find
ctrl+H replace
ctrl+shift+F find in files
alt+f3 add all occurrences of the current word to the selection

Tabs
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ctrl+shift+t open last closed tab (just like in your browser)
ctrl+PgDn cycle down through open tabs, cycle up with ctrl+PgUp
ctrl+⇆ cycle through last tabs (repeat to go back further in history)

Split window
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Alt+shift+2 split into two columns
Alt+shift+1 revert to single column
Alt+shift+5 grid (4 groups)
ctrl+[1,2,3,4] jump to “group” (pane)
ctrl+shift+[1,2,3,4] move file to specified group

Bookmarks
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ctrl+F2 toggle bookmark
F2 next bookmark
shift+F2 previous bookmark
ctrl+shift+F2 clear bookmarks

Text manipulation
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ctrl+KU upper case
ctrl+KL lower case

External programs
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F5 Start FSM Editor, witht the current file if possible
F6 Start TexView 2, witht the current file if possible
F8 Try to find the best program for the current file

Tortoise SVN
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ctrl+alt+v, ctrl+alt+e explore
ctrl+alt+v, ctrl+alt+c commit
ctrl+alt+v, ctrl+alt+s status
ctrl+alt+v, ctrl+alt+u sync
ctrl+alt+v, ctrl+alt+l log
ctrl+alt+v, ctrl+alt+f diff
ctrl+alt+v, ctrl+alt+g log
ctrl+alt+v, ctrl+alt+m blame
ctrl+alt+v, ctrl+alt+x explore
ctrl+alt+v, ctrl+alt+a add
ctrl+alt+v, ctrl+alt+r remove
ctrl+alt+v, ctrl+alt+t revert