Add feature system.

1 files changed, 1 insertions, 0 deletions

diff --git a/mkdocs.yml b/mkdocs.yml
index 6c99184..3968730 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -5,6 +5,7 @@ nav:
     - Account: 'account/index.md'
     - 'Account shell': 'account/shell/index.md'
     - Chat: 'chat/index.md'
+    - System: 'system/index.md'
     - Source: 'source/index.md'
 - Use:
 #    - Introduction: 'use.md'