¡	¡ 	¡ 	\a161 	Inverted exclamation
¢ 	¢ 	¢ 	\a162 	Cent sign
£ 	£ 	£ 	\a163 	Pound sign
 	:
 	: skipped
 	:
œ 	œ 	œ 	\a156 	Small combined oe
Ÿ 	Ÿ 	Ÿ 	\a159 	Large Y with diaeresis

##</code><code>##

perl -i.bak -pe '\
    binmode STDIN,":utf8"; \
    binmode STDOUT,":utf8"; \
    if (/^([^[:ascii:]])/) { \
        $_= sprintf("%04x",ord $1).$_ \
    }' pml.txt

##</code><code>##

00c2¡	&#161; 	&iexcl; 	\a161 	Inverted exclamation
00c2¢ 	&#162; 	&cent; 	\a162 	Cent sign
00c2£ 	&#163; 	&pound; 	\a163 	Pound sign

##</code><code>##

perl -i.bar -CDS -pe ' \
    if (/^([^[:ascii:]])/) { \
        $_= sprintf("%04x",ord $1).$_ \
    }' pml.txt