The slide is about Internationalizing and Localizing WordPress Theme and presented in WordCamp Nepal 2012. \
It is about how to make the WordPress theme translation ready by using the available Internationalization and localization WordPress functions. Then extracting all the translatable messages using appropriate software, writing translation and creating language files and using these file to have the WordPress theme in another language. So, overall it is the process to make the theme available in another language.
Clipping is a handy way to collect important slides you want to go back to later.