Take the 2-minute tour ×  The second parameter in the translate
function is optional, but I always see people use it and some
don't.  So I want to know if I should use it or not and if yes,
how I will use it later.  I asking this because I'm new to this,
and I'm using e() and _() right now in my theme, and I'll learn
how to translate it when I finish.  Thanks in advance
share|improve this question  1 Answer 1  up vote 3 down vote
accepted  Welcome to WPSE Peter,  The second argument is a
translation domain. This is essentially where the translation
for the first argument can be found. By default it checks the
WordPress language folder - but if you are creating a custom
theme or plug-in, you cannot rely on the translation for that
string to be there (after all the WordPress language folders
only contain translations for WordPress, not your plug-
in/theme).  The setup is different for plug-ins, but to register
a text domain for themes you use load_theme_textdomain:
add_action('after_setup_theme', 'my_theme_set