%SUBS = (

...
...
...

'some_sub1' => <<'END_OF_FUNC',
sub some_sub1 {
    ...
    ...
}
END_OF_FUNC

'some_sub2' => <<'END_OF_FUNC',
sub some_sub2 {
    ...
    ...
}
END_OF_FUNC

...
...
...

)