X-Git-Url: https://git.ladys.computer/Shushe/blobdiff_plain/e7c797ffb120c0dac9be13b28d533d49d164b6d0..af8b42c720c6aaa54199b556a656d40e8b8951a6:/README.markdown

diff --git a/README.markdown b/README.markdown
index 2dd0eff..84c3206 100644
--- a/README.markdown
+++ b/README.markdown
@@ -313,10 +313,41 @@ The following are recommendations on effective creation of
 ⛩️📰 书社 will wrap the final output of the transforms in appropriate
   `<html:html>` and `<html:body>` elements, so it is not necessary for
   transforms to do this explicitly.
-The `<html:head>` of the output will contain the result tree generated
-  by matching the root node in the `书社:metadata` mode; the provided
-  `transforms/metadata.xslt` transform uses this mode to generate basic
-  metadata, but it is possible for other transforms to add their own.
+After performing the initial transform, ⛩️📰 书社 will match the root
+  node of the result in the following modes to fill in areas of the
+  wrapper :⁠—
+
+- **`书社:metadata`:**
+  The result of matching in this mode is inserted into the
+    `<html:head>` of the output.
+
+In addition to being called with the transform result, each of these
+  modes will additionally be called with a `<xslt:include>` element
+  corresponding to each transform.
+If a transform has a `<书社:id>` top‐level element whose value is an
+  i·r·i, its `<xslt:import>` element will have a corresponding
+  `@书社:id` attribute.
+This mechanism can be used to allow transforms to insert content
+  without matching any elements in the result; for example, the
+  following transform adds a link to a stylesheet to the `<html:head>`
+  of every page :⁠—
+
+```xml
+<?xml version="1.0"?>
+<transform
+	xmlns="http://www.w3.org/1999/XSL/Transform"
+	xmlns:html="http://www.w3.org/1999/xhtml"
+	xmlns:xslt="http://www.w3.org/1999/XSL/Transform"
+	xmlns:书社="urn:fdc:ladys.computer:20231231:Shu1She4"
+	exclude-result-prefixes="书社"
+	version="1.0"
+>
+	<书社:id>example:add-stylesheet-links.xslt</书社:id>
+	<template match="xslt:include[@书社:id='example:add-stylesheet-links.xslt']" mode="书社:metadata">
+	  <html:link rel="stylesheet" type="text/css" href="/style.css"/>
+	</template>
+</transform>
+```
 
 ## License