in default theme files i.e. index.php, single.php etc. i can use all the WP functions normally. But if i create a new theme file, for example custom-file.php and place it in the theme folder, i don't have access to default WP functions like get_header, etc...
Is there anything that could be included in custom files to make them recognized by WP as a part of the theme?
wp-load.php. – toscho♦ Jul 30 '12 at 16:24