diff --git a/resources/function_help/json/CRS b/resources/function_help/json/CRS
new file mode 100644
index 000000000000..753696c987dc
--- /dev/null
+++ b/resources/function_help/json/CRS
@@ -0,0 +1,5 @@
+{
+  "name": "CRS",
+  "type": "group",
+  "description": "This group contains functions to operate on coordinate reference system objects."
+}
diff --git a/resources/function_help/json/crs_authid b/resources/function_help/json/crs_authid
new file mode 100644
index 000000000000..b9e916a2e30c
--- /dev/null
+++ b/resources/function_help/json/crs_authid
@@ -0,0 +1,15 @@
+{
+  "name": "crs_authid",
+  "type": "function",
+  "groups": ["CRS"],
+  "description": "Returns a user-friendly identifier for the CRS",
+  "arguments": [{
+    "arg": "crs",
+    "description": "crs value"
+  }],
+  "examples": [{
+    "expression": "crs_authid(make_crs('EPSG:3857'))",
+    "returns": "'EPSG:3857'"
+  }],
+  "tags": ["crs", "epsg", "authid"]
+}
diff --git a/resources/function_help/json/make_crs b/resources/function_help/json/make_crs
new file mode 100644
index 000000000000..4287529472c0
--- /dev/null
+++ b/resources/function_help/json/make_crs
@@ -0,0 +1,15 @@
+{
+  "name": "make_crs",
+  "type": "function",
+  "groups": ["CRS"],
+  "description": "Creates a coordinate reference system from a string definition",
+  "arguments": [{
+    "arg": "definition",
+    "description": "CRS definition"
+  }],
+  "examples": [{
+    "expression": "make_crs('EPSG:3857')",
+    "returns": "crs value 'EPSG:3857 - WGS 84 / Pseudo-Mercator'"
+  }],
+  "tags": ["crs", "epsg"]
+}