# Introduction <br> <br> <br> <br> <br> | *Meta* | *Data* | | -- | -- | | **Title** | {{ config.title }} | | **Author** | {{ config.author }} | | **Description** | {{ config.description }} | | **Keywords** | {{ config.keywords }} | | **Language** | English | | **Published** | Published {{ config.published }} as an electronic book | | **Updated** | {{ gitbook.time }} | | **Collection** | Open-source | | **Website** | [{{ config.website }}]({{ config.website }}) |