plugins/extensions-for-pressbooks/ # → Plugin root
├── admin # → Admin folder
│ ├── efpb-admin-settings.php # → Admin settings file php
│ ├── efpb-theme-customizations.php # → Theme Customization file php
│ └── index.php # → Empty index file php
├── canonical # → Canonical folder
│ ├── efpb-canonical.php # → Canonical file php
│ └── index.php # → Empty index file php
├── default # → Default themes and settings folder
│ ├── efpb-default-settings.php # → Default settings file php
│ ├── efpb-default-themes.php # → Default themes file php
│ └── index.php # → Empty index file php
├── doc # → Doc folder
│ └── FOLDER-STRUCTURE.md # → Folder structure file md
├── groupByLanguage # → GroupByLanguage folder
│ └── efpb-groupByLanguage.php # → GroupByLanguage file php
├── network-admin # → Network admin folder
│ └── efpb-network-admin.php # → Network admin file php
├── original-mark # → Original mark folder
│ ├── assets # → Assets folder
│ │ └── scripts # → Scripts folder
│ │ └── original-mark-admin.js # → Original mark admin file js
│ ├── efpb-original-mark.php # → Original mark file php
│ └── index.php # → Empty index file php
├── post # → Post folder
│ └── efpb-post.php # → Post file php
├── post-metabox-pb_is_based_on # → Post metabox folder
│ └── efpb-post-metabox-pb_is_based_on.php # → Post metabox file php
├── wp-assets # → Wordpress assets folder
│ ├── banner-772x250.png # → Banner file png
│ ├── banner-1544x500-rtl.png # → Banner file png
│ ├── banner-1544x500.png # → Banner file png
│ ├── icon-128x128.png # → Icon file png
│ ├── icon-256x256.png # → Icon file png
│ ├── screenshot-1.png # → Screenshot file png
│ └── screenshot-2.png # → Screenshot file png
├── .editorconfig
├── .gitattributes
├── .gitignore
├── extensions-for-pressbooks.php # → Main plugin file php
├── index.php # → Empty index file php
├── LICENSE.md # → License file md
├── LICENSE.txt # → License file txt
├── README.md # → Readme file md
└── readme.txt # → Readme file txt