This is BibTeX, Version 0.99d (TeX Live 2022/Debian)
Capacity: max_strings=200000, hash_size=200000, hash_prime=170003
The top-level auxiliary file: document.aux
The style file: plain.bst
Database file #1: refs.bib
You've used 3 entries,
            2118 wiz_defined-function locations,
            521 strings with 4580 characters,
and the built_in function-call counts, 1233 in all, are:
= -- 127
> -- 46
< -- 1
+ -- 17
- -- 14
* -- 90
:= -- 198
add.period$ -- 10
call.type$ -- 3
change.case$ -- 15
chr.to.int$ -- 0
cite$ -- 3
duplicate$ -- 45
empty$ -- 102
format.name$ -- 14
if$ -- 263
int.to.chr$ -- 0
int.to.str$ -- 3
missing$ -- 3
newline$ -- 18
num.names$ -- 8
pop$ -- 13
preamble$ -- 1
purify$ -- 12
quote$ -- 0
skip$ -- 35
stack$ -- 0
substring$ -- 112
swap$ -- 13
text.length$ -- 1
text.prefix$ -- 0
top$ -- 0
type$ -- 12
warning$ -- 0
while$ -- 14
width$ -- 4
write$ -- 36