diff --git a/package.json b/package.json
index e622f2c..befbf74 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
     "build": "tsbb build",
     "watch": "tsbb watch",
     "type-check": "tsc --noEmit",
+    "test:doc": "node lib/sgo.js -d node_modules/@uiw/doc/web",
     "test": "tsbb test",
     "coverage": "tsbb test --coverage"
   },
@@ -59,6 +60,7 @@
     "@types/fs-extra": "^11.0.1",
     "@types/minimist": "^1.2.2",
     "@types/node": "^18.15.11",
+    "@uiw/doc": "^4.21.28",
     "tsbb": "^4.0.1"
   }
 }
diff --git a/src/sgo.ts b/src/sgo.ts
index 7a69655..64cf26c 100644
--- a/src/sgo.ts
+++ b/src/sgo.ts
@@ -40,14 +40,16 @@ import server from './server';
     console.log('  Copyright 2020');
     return;
   }
-  if (argvs.reload === undefined || argvs.r) argvs.reload = argvs.r = true;
-  if (argvs.browser === undefined || argvs.b) argvs.browser = argvs.b = true;
-  if (!argvs.port) argvs.port = argvs.p = Number(process.env.PORT) || 1987;
-  if (argvs.p) argvs.port = argvs.p;
-  if (!argvs.dir) argvs.dir = argvs.d = '';
-  if (argvs.d) argvs.dir = argvs.d;
-  if (!argvs.fallback) argvs.fallback = '';
-  if (!argvs['reload-port'])argvs['reload-port'] = 19872;
+  argvs.reload = argvs.reload || argvs.b || true;
+  argvs.b = argvs.reload;
+  argvs.browser = argvs.browser || argvs.b || true;
+  argvs.b = argvs.browser;
+  argvs.port = argvs.port || argvs.p || Number(process.env.PORT) || 1987;
+  argvs.p = argvs.port;
+  argvs.dir = argvs.dir || argvs.d || '';
+  argvs.d = argvs.dir;
+  argvs.fallback = argvs.fallback || '';
+  argvs['reload-port'] = argvs['reload-port'] || 19872;
   server(argvs);
 
 })();