In Duat, there are various types of “objects” for selection. These get used on Normal mode key sequences, most notably on mi and ma. Each of them defines something to be selected:

b, (, )
Inside/around parenthesis.

B, {, }
Inside/around curly braces.

r, [, ]
Inside/around brackets.

a, <, >
Inside/around angle brackets.

q, '
Inside/around single quotes.

Q, "
Inside/around double quotes.

g, `
Inside/around graves.

w, e Inside/around words and WORDs.

s
Inside/around sentences.

p
Inside/around paragraphs.

i
Inside/around lines of equal or greater indentation.

Inside/around whitespace.

h, <Left>
Move left. Wraps around lines.

j
Move down

<Down>
Move down to the next wrapped line (i.s vim’s gj).

k
Move up.

<Up>
Move up to the previous wrapped line (i.e. vim’s gk).

l, <Right>
Move right. Wraps around lines.

H, <s-Left>, J, <s-Down>, K, <s-Up>, L, <s-Right>
Same as the previous characters, but extends the selection

w
Selects the word/spaces ahead of the selection.

e
Selects the WORD/spaces ahead of the selection.

b
Selects the word/spaces behind the selection.

v
Selects the WORD/spaces behind the selection

<(W|E|B|V)>
The same as (w|b|e|v), but extends the selection.

f{char}
Selects to the next occurrence of the {char}.

t{char}
Selects until the next occurrence of the {char}.

<(F|T)>{char}
Same as (f|t), but extends the selection.

<a-(f|t)>{char}
Same as (f|t), but in the opposite direction.

<a-(F|T)>{char}
Same as <a-(f|t)>, but in extends the selection.

{param}g
Goes to the {param}th line. If param was not set, enters go to mode.

{param}G
Extends to the {param}th line. If param was not set, enters go to mode, and actions will extend.

x
Extends selection to encompass full lines.

%
Selects the whole buffer.

<a-h>, <Home>
Selects to the start of the line.

<a-l>, <End>
Selects until the end of the line.

<a-H>, <s-Home>, <a-L>, <s-End>
Same as the previous two, but extends the selection.

[,]
Select around start/end of object

{,}
Extend around start/end of object

<a-[>,<a-]>
Select inside start/end of object

<a-{>,<a-}>
Extend inside start/end of object

m,
Enter Match mode by selecting.

M,
Enter Match mode by extending.

<a-u>
Returns to the previous state for the selections.

<a-U>
Goes to the next state for the selections.

;
Reduces selections to just the cursor.

<a-;>
Flips the cursor and anchor of selectionss around.

,
Removes extra selections.

C
Creates a selection on the column below the last one.

<a-C>
Creates a selection on the column above the first one.

<a-:>
Places the cursor ahead of the anchor in all selections.

X
Divides selection into multiple selections, one per line.

D
Splits into two selections, one at each end of the selection.

<a-_>
Merges all adjacent selections.

<a-q>
Replays the recorded macro.

<a-Q>
Starts/stops recording a macro.

<c-r>
Reloads the configuration crate.

i
Enter insert mode before selections.

a
Enter insert mode after selection.

I
Moves to the beginning of the line (after indent) and enters insert mode.

A
Moves to the end of the line and enters insert mode.

y
Yanks selections.

d
Deletes and yanks the selections.

s
Deletes, yanks, and enter insert mode.

p
Pastes after end of each selection (multi line selections are placed on the next line).

P
Pastes at the start of each selection (multi line pastes are placed on the previous line).

R
Replaces with the pasted text, without yanking.

<A-d>
Deletes selections without yanking.

<A-s>
Deletes selections without yanking, then enters insert mode.

o
Creates a new line below and enters insert mode in it.

O
Creates a new line above and enters insert mode in it.

<A-(o|O)>
Same as (o|O), but just adds the new line without moving.

r{key}
Replaces each character with {key}

u
[Undoes] the last moment

U
[Redoes] the next moment

>
Adds indentation to the selected lines.

<
Removes indentation to the selected lines.

<A-j>
Merges selected lines.

`
Changes selection to lowercase.

~
Changes selection to uppercase.

<A-`>
Swaps the case of each character.

)
Enters rotate mode, rotating forwards.

(
Enters rotate mode, rotating backwards.

|
Pipes the selections to an external command, replacing their content with the output.

<c-r>
Reload Duat’s config.

Searching in Duat is incremental in nature. It takes a regex pattern and applies it in real time, which will yield multiple selections, depending on which key you typed to start searching:

/
Searches forward for the next pattern.

<A-/>
Searches backwards for the previous pattern.

?
Extends forward for the next pattern.

<A-?>
Extends backwards for the previous pattern.

s
Selects the pattern from within current selections.

S
Splits current selections by the pattern.

<A-k>
Keeps only the selections that match the pattern.

<A-K>
Keeps only the selections that don’t match the pattern.

n
Go to next match for pattern.

N
Create a new cursor on the next match for pattern.

<A-n>
Go to previous match for pattern.

<A-N>
Create a new cursor on the previous match for pattern.

*
Makes the main selection the searching pattern.

h
Move to the beginning of the line (before indents, column 0).

l
Go to the end of the line.

i
Go to the beginning of the line, after indents.

g,k
Go to the first line.

j
Go to the last line.

a
Go to the last buffer. Repeating will return to this buffer

n
Go to the next buffer (includes other windows).

N
Go to the previous buffer (includes other windows).

m,l
Select/extend to the next matching pair.

M
Extend to the next matching pair.

<a-m>,h
Select/extend to the previous matching pair.

<a-M>
Extend to the previous matching pair.

i
Select/extend inside object.

a
Select/extend around object.

s
Rotates the selections.

c
Rotates the content of the selections.

l
Enter LSP mode, giving you access to a bunch of LSP related actions.

L
Enter the logs, letting you see the history of notifications to Duat.