chore(markdown): Restructuring dev docs

markdown/dev/reference/api/macros/rmad/en.md

@@ -0,0 +1,26 @@
+---
+title: rmad
+---
+
+The `rmad` macro removes all dimensions with the exception of those that were created with a custom ID.
+It is provided by the [dimension plugin](/reference/plugins/dimension/).
+
+To be able to use this plugin, you need to give your dimension an id:
+
+```js
+// This will be removed
+macro('ld', {
+  from: points.from,
+  to: points.to,
+  d: 0,
+})
+// This will not removed
+macro('ld', {
+  from: points.from,
+  to: points.to,
+  d: 0,
+  id: 'example' // custom ID
+})
+
+macro('rmad')
+```