diff --git a/modules/purchase_trade/__init__.py b/modules/purchase_trade/__init__.py
index 007af58..fa4e8ee 100755
--- a/modules/purchase_trade/__init__.py
+++ b/modules/purchase_trade/__init__.py
@@ -34,6 +34,7 @@ from . import (
     backtoback,
     service,
     invoice,
+    process_documentation,
     routes,
 )
 
@@ -60,6 +61,7 @@ def register():
         lc.LCMessage,
         lc.CreateLCStart,
         global_reporting.GRConfiguration,
+        process_documentation.ProcessDocumentation,
         pricing.ImportPricesStart,
         pricing.ImportPricesResult,
         module='purchase_trade', type_='model')
diff --git a/modules/purchase_trade/process_documentation.py b/modules/purchase_trade/process_documentation.py
new file mode 100644
index 0000000..cafde12
--- /dev/null
+++ b/modules/purchase_trade/process_documentation.py
@@ -0,0 +1,238 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+import base64
+import html
+import json
+import mimetypes
+import os
+import posixpath
+import re
+from pathlib import Path
+from urllib.parse import unquote
+
+from trytond.model import ModelSingleton, ModelSQL, ModelView, fields
+
+
+DOCUMENTATION_ROOT = Path(__file__).with_name('process_documentation')
+MARKDOWN_LINK = re.compile(r'(!?)\[([^\]]*)\]\(([^)]+)\)')
+
+
+class ProcessDocumentation(ModelSingleton, ModelSQL, ModelView):
+    "Process Documentation"
+    __name__ = 'purchase_trade.process.documentation'
+
+    content = fields.Function(fields.Text('Content'), 'get_content')
+
+    def get_content(self, name):
+        pages = _documentation_pages()
+        return HTML_TEMPLATE % {
+            'initial': pages.get('README.md', ''),
+            'pages': json.dumps(pages).replace('</', '<\\/'),
+            }
+
+
+def _documentation_pages():
+    pages = {}
+    for path in sorted(DOCUMENTATION_ROOT.rglob('*.md')):
+        relative_name = _relative_name(path)
+        markdown = path.read_text(encoding='utf-8')
+        pages[relative_name] = _markdown_to_html(markdown, relative_name)
+    return pages
+
+
+def _relative_name(path):
+    return path.relative_to(DOCUMENTATION_ROOT.resolve()).as_posix()
+
+
+def _resolve_link(current_file, target):
+    if target.startswith(('#', 'http://', 'https://', 'mailto:')):
+        return target
+    target = unquote(target).replace('\\', '/')
+    current_dir = posixpath.dirname(current_file)
+    return posixpath.normpath(posixpath.join(current_dir, target)).lstrip('/')
+
+
+def _asset_data_uri(filename):
+    path = (DOCUMENTATION_ROOT / Path(*filename.split('/'))).resolve()
+    root = DOCUMENTATION_ROOT.resolve()
+    common_path = os.path.commonpath([str(root), str(path)])
+    if path != root and common_path == str(root):
+        if path.exists() and path.is_file():
+            mimetype = mimetypes.guess_type(str(path))[0]
+            mimetype = mimetype or 'application/octet-stream'
+            data = base64.b64encode(path.read_bytes()).decode('ascii')
+            return 'data:%s;base64,%s' % (mimetype, data)
+
+
+def _inline(markdown, current_file):
+    parts = []
+    last = 0
+    for match in MARKDOWN_LINK.finditer(markdown):
+        parts.append(html.escape(markdown[last:match.start()]))
+        is_image, label, target = match.groups()
+        resolved = _resolve_link(current_file, target)
+        label = html.escape(label)
+
+        if is_image:
+            source = _asset_data_uri(resolved)
+            if source:
+                parts.append('<img src="%s" alt="%s"/>' % (
+                        html.escape(source, quote=True), label))
+            else:
+                parts.append(label)
+        elif resolved.endswith('.md'):
+            parts.append('<a href="#" data-doc="%s">%s</a>' % (
+                    html.escape(resolved, quote=True), label))
+        elif resolved.startswith(('#', 'http://', 'https://', 'mailto:')):
+            parts.append('<a href="%s">%s</a>' % (
+                    html.escape(resolved, quote=True), label))
+        else:
+            parts.append(html.escape(match.group(0)))
+        last = match.end()
+    parts.append(html.escape(markdown[last:]))
+    return ''.join(parts)
+
+
+def _markdown_to_html(markdown, current_file):
+    body = []
+    table = []
+    in_list = False
+
+    def close_list():
+        nonlocal in_list
+        if in_list:
+            body.append('</ul>')
+            in_list = False
+
+    def flush_table():
+        nonlocal table
+        if table:
+            close_list()
+            body.append(_render_table(table, current_file))
+            table = []
+
+    for line in markdown.splitlines():
+        stripped = line.strip()
+        if stripped.startswith('|') and stripped.endswith('|'):
+            table.append(stripped)
+            continue
+
+        flush_table()
+        if not stripped:
+            close_list()
+            continue
+
+        if stripped.startswith('#'):
+            close_list()
+            level = len(stripped) - len(stripped.lstrip('#'))
+            level = min(level, 6)
+            title = stripped[level:].strip()
+            body.append('<h%d>%s</h%d>' % (
+                    level, _inline(title, current_file), level))
+        elif stripped.startswith('- '):
+            if not in_list:
+                body.append('<ul>')
+                in_list = True
+            body.append('<li>%s</li>' % _inline(
+                    stripped[2:].strip(), current_file))
+        else:
+            close_list()
+            body.append('<p>%s</p>' % _inline(stripped, current_file))
+
+    flush_table()
+    close_list()
+
+    if current_file != 'README.md':
+        body.insert(
+            0, '<p><a href="#" data-doc="README.md">Back to index</a></p>')
+    return '\n'.join(body)
+
+
+def _render_table(lines, current_file):
+    rows = [
+        [cell.strip() for cell in line.strip('|').split('|')]
+        for line in lines
+        ]
+    header = rows[0] if rows else []
+    data = rows[1:]
+    if data and all(set(cell) <= {'-', ':'} for cell in data[0]):
+        data = data[1:]
+
+    output = ['<table>', '<thead><tr>']
+    for cell in header:
+        output.append('<th>%s</th>' % _inline(cell, current_file))
+    output.append('</tr></thead><tbody>')
+    for row in data:
+        output.append('<tr>')
+        for cell in row:
+            output.append('<td>%s</td>' % _inline(cell, current_file))
+        output.append('</tr>')
+    output.append('</tbody></table>')
+    return ''.join(output)
+
+
+HTML_TEMPLATE = '''<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8"/>
+    <style>
+        body {
+            color: #1f2933;
+            font-family: Arial, sans-serif;
+            line-height: 1.5;
+            margin: 0;
+            padding: 24px;
+        }
+        a {
+            color: #0b63ce;
+            text-decoration: none;
+        }
+        a:hover {
+            text-decoration: underline;
+        }
+        table {
+            border-collapse: collapse;
+            margin: 16px 0;
+            width: 100%%;
+        }
+        th,
+        td {
+            border: 1px solid #d7dde5;
+            padding: 8px 10px;
+            text-align: left;
+            vertical-align: top;
+        }
+        th {
+            background: #f3f6f9;
+        }
+        img {
+            height: auto;
+            max-width: 100%%;
+        }
+    </style>
+</head>
+<body>
+    <main id="content">%(initial)s</main>
+    <script>
+        const pages = %(pages)s;
+        const content = document.getElementById('content');
+
+        function showDocument(name) {
+            content.innerHTML = pages[name] || pages['README.md'];
+            window.scrollTo(0, 0);
+        }
+
+        document.addEventListener('click', function(event) {
+            const link = event.target.closest('a[data-doc]');
+            if (!link) {
+                return;
+            }
+            event.preventDefault();
+            showDocument(link.dataset.doc);
+        });
+
+        showDocument('README.md');
+    </script>
+</body>
+</html>
+'''
diff --git a/modules/purchase_trade/process_documentation.xml b/modules/purchase_trade/process_documentation.xml
index 753cb14..128e811 100644
--- a/modules/purchase_trade/process_documentation.xml
+++ b/modules/purchase_trade/process_documentation.xml
@@ -3,9 +3,21 @@
 this repository contains the full copyright notices and license terms. -->
 <tryton>
     <data>
-        <record model="ir.action.url" id="url_tradon_processes">
+        <record model="ir.ui.view" id="process_documentation_view_form">
+            <field name="model">purchase_trade.process.documentation</field>
+            <field name="type">form</field>
+            <field name="name">process_documentation_form</field>
+        </record>
+
+        <record model="ir.action.act_window" id="act_tradon_processes">
             <field name="name">Tradon Processes</field>
-            <field name="url">/tradon/purchase_trade/processes</field>
+            <field name="res_model">purchase_trade.process.documentation</field>
+        </record>
+        <record model="ir.action.act_window.view"
+            id="act_tradon_processes_view_form">
+            <field name="sequence" eval="10"/>
+            <field name="view" ref="process_documentation_view_form"/>
+            <field name="act_window" ref="act_tradon_processes"/>
         </record>
 
         <menuitem
@@ -17,8 +29,16 @@ this repository contains the full copyright notices and license terms. -->
         <menuitem
             name="Tradon Processes"
             parent="menu_help_processes"
-            action="url_tradon_processes"
+            action="act_tradon_processes"
             sequence="10"
             id="menu_tradon_processes"/>
+
+        <record model="ir.model.access" id="access_process_documentation">
+            <field name="model">purchase_trade.process.documentation</field>
+            <field name="perm_read" eval="True"/>
+            <field name="perm_write" eval="False"/>
+            <field name="perm_create" eval="False"/>
+            <field name="perm_delete" eval="False"/>
+        </record>
     </data>
 </tryton>
diff --git a/modules/purchase_trade/view/process_documentation_form.xml b/modules/purchase_trade/view/process_documentation_form.xml
new file mode 100644
index 0000000..2d5628c
--- /dev/null
+++ b/modules/purchase_trade/view/process_documentation_form.xml
@@ -0,0 +1,4 @@
+<form col="1">
+    <field name="content" widget="html_viewer" height="900"/>
+</form>
+