diff --git a/site/content/completions/powershell.md b/site/content/completions/powershell.md
index 667e2e1..b6a312e 100644
--- a/site/content/completions/powershell.md
+++ b/site/content/completions/powershell.md
@@ -36,6 +36,20 @@ $ helm s[tab]
 search  show  status
 ```
 
+### Aliases
+
+You can also configure `powershell` aliases for your program, and they will also support completions.
+
+```
+$ sal aliasname origcommand
+$ Register-ArgumentCompleter -CommandName 'aliasname' -ScriptBlock $__origcommandCompleterBlock
+# and now when you run `aliasname` completion will make
+# suggestions as it did for `origcommand`.
+$ aliasname <tab>
+completion     firstcommand   secondcommand
+```
+The name of the completer block variable is of the form `$__<programName>CompleterBlock` where every `-` and `:` in the program name have been replaced with `_`, to respect powershell naming syntax.
+
 ### Limitations
 
 * The following flag completion annotations are not supported and will be ignored for `powershell`: