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diff --git a/common/modules/webui.org b/common/modules/webui.org
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+#+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %10BEAMER_act(Act) %4BEAMER_col(Col) %10BEAMER_extra(Extra) %8BEAMER_opt(Opt)
+#+INCLUDE: "prelude.org" :minlevel 1
+
+* Web UI
+  :PROPERTIES:
+  :CUSTOM_ID: main
+  :END:
+** Web user interface
+   :PROPERTIES:
+   :CUSTOM_ID: intro
+   :END:
+**** 
+     Browser-based interface to browse the Software Heritage archive \\
+     *\url{https://archive.softwareheritage.org/browse/}*
+**** Technology preview... just for you!
+     - username: libreplanet
+     - password: 2018
+**** Features
+     - all *REST API features*, but good looking :-)
+       - browsing: snapshots → revisions → directories → contents …
+       - access to metadata and crawling information
+     - *origin search*, as full text indexing of origin URLs
+     - bulk *download*, via integration with the Vault
+** Web UI --- origin search
+   :PROPERTIES:
+   :CUSTOM_ID: origin-search
+   :END:
+   #+latex: \centering \vspace{-3mm}
+   #+ATTR_LATEX: :width \textwidth
+   file:webui-origin-search.png
+** Web UI --- available visits
+   :PROPERTIES:
+   :CUSTOM_ID: visits
+   :END:
+   #+latex: \centering \vspace{-3mm}
+   #+ATTR_LATEX: :width \textwidth
+   file:webui-histogram.png
+** Web UI --- calendar
+   :PROPERTIES:
+   :CUSTOM_ID: calendar
+   :END:
+   #+latex: \centering \vspace{-3mm}
+   #+ATTR_LATEX: :width \textwidth
+   file:webui-calendar.png
+** Web UI --- directory browsing
+   :PROPERTIES:
+   :CUSTOM_ID: directory
+   :END:
+   #+latex: \centering \vspace{-3mm}
+   #+ATTR_LATEX: :width .85\textwidth
+   file:webui-directory.png
+** Web UI --- syntax highlighting and selection
+   :PROPERTIES:
+   :CUSTOM_ID: syntax
+   :END:
+   #+latex: \centering \vspace{-3mm}
+   #+ATTR_LATEX: :width .85\textwidth
+   file:webui-source-file.png
+** Web UI --- revisions as diffs
+   :PROPERTIES:
+   :CUSTOM_ID: commit
+   :END:
+   #+latex: \centering \vspace{-3mm}
+   #+ATTR_LATEX: :width .85\textwidth
+   file:webui-commit-diff.png