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Signature symbols in this unit

Symbol	Specification	Kind	Type
# .	string	f	string → nat
. '	string	f	char → string
. + .	nat-basic	f	nat × nat → nat
. + .	string	f	string × char → string
. + .	string	f	char × string → string
. + .	string	f	string × string → string
. ++ .	string	f	string × char → string
. +1	nat-basic	f	nat → nat
. +2 .	string	f	char × char → string
. - .	nat	pf	nat × nat → nat with λ n, m. n ≥ m
. -1	nat-basic	pf	nat → nat with λ n. n ≠ 0
. -1l .	string	f	string × char → string
. -l .	string	f	string × char → string
. -p .	string	f	string × nat → string
. .butlast	string	pf	string → string with λ str. str ≠ ""
. .char1	string	pf	string → char with λ str. str ≠ ""
. .dentry?	dentry	p	dentry
. .ino	dentry	pf	dentry → nat with λ dent. dent.dentry?
. .ino:= .	dentry	pf	dentry × nat → dentry with λ dent, m. dent.dentry?
. .last	string	pf	string → char with λ str. str ≠ ""
. .name	dentry	f	dentry → string
. .name:= .	dentry	f	dentry × string → dentry
. .negdentry?	dentry	p	dentry
. .rstring	string	pf	string → string with λ str. str ≠ ""
. < .	nat-basic	p	nat × nat
. > .	nat	p	nat × nat
. [ . ]	string	pf	string × nat × char → string with λ str, n, char. n < # str
. [ . ]	string	pf	string × nat → char with λ str, n. n < # str
. ∈ .	string	p	char × string
. ≤ .	nat	p	nat × nat
. ≥ .	nat	p	nat × nat
. ⊑ .	string	p	string × string
. ⊒ .	string	p	string × string
⊏	string	p	string × string
butlastn	string	pf	nat × string → string with λ n, str. n ≤ # str
char	char	s
char	char	v	char
char0	char	v	char
char1	char	v	char
char2	char	v	char
dent	dentry	v	dentry
dentry	dentry	s
disj	string	p	string × string
dups	string	p	string
fillfirst	string	f	nat × char × string → string
firstn	string	pf	nat × string → string with λ n, str. n ≤ # str
frome	string	f	string × char → string
lastn	string	pf	nat × string → string with λ n, str. n ≤ # str
m	nat-basic	v	nat
m0	dentry	v	nat
mkdentry	dentry	f	string × nat → dentry
mklist	string	f	char × nat → string
n	nat-basic	v	nat
n0	nat-basic	v	nat
n1	nat-basic	v	nat
nat	nat-basic	s
negdentry	dentry	f	string → dentry
pos	string	f	char × string → nat
restn	string	pf	nat × string → string with λ n, str. n ≤ # str
rev	string	f	string → string
rmdup	string	f	string → string
str	string	v	string
str0	string	v	string
str1	string	v	string
str2	string	v	string
str3	string	v	string
string	string	s
sublist	string	pf	nat × nat × string → string with λ n, m, str. n + m ≤ # str