PO::export_entry()
Method: Builds a string from the entry for inclusion in PO file
Source: wp-includes/pomo/po.php:227
PO::match_begin_and_end_newlines()
Method:
Source: wp-includes/pomo/po.php:263
PO::import_from_file()
Method:
Source: wp-includes/pomo/po.php:296