Key/Value data from CLI (#2894)

1 files changed, 13 insertions, 3 deletions

diff --git a/docs/reference/groups.yml b/docs/reference/groups.yml
index 5ae564b2..16ded697 100644
--- a/docs/reference/groups.yml
+++ b/docs/reference/groups.yml
@@ -129,9 +129,19 @@
   details: |
     Module for system interactions.
 
-    Currently, this module defines a single item: The `sys.version` constant
-    (of type [`version`]($version)), that specifies the currently active
-    Typst compiler version.
+    This module defines the following items:
+
+    - The `sys.version` constant (of type [`version`]($version)) that specifies
+      the currently active Typst compiler version.
+
+    - The `sys.inputs` [dictionary]($dictionary), which makes external inputs
+      available to the project. An input specified in the command line as
+      `--input key=value` becomes available under `sys.inputs.key` as
+      `{"value"}`. To include spaces in the value, it may be enclosed with
+      single or double quotes.
+
+      The value is always of type [string]($str). More complex data
+      may be parsed manually using functions like [`json.decode`]($json.decode).
 
 - name: sym
   title: General