A tool for creating new tables, content items (tt_content: content container, content element, content plugin), page types (pages: doktype, subdoktype, module), and adding columns to existing tables (pages, tt_content, fe_users, fe_groups, sys_file_reference). For text fields, use the visual editor TinyMCE. And module for viewing categories and elements for the standard properties of "parent_uid" and "category_uid" (Mto1, MtoM).