cleanup, docs

site/doc/pages/basename.txt

@@ -2,14 +2,16 @@
 String basename(String fn)
 
 :params
-fn : raw filename
-return value : the file's name
+fn : a path
+return value : the final path component
+
+:content
+Returns the last component of a path — the file or directory name without its leading directories.
+
+:example
+print(basename("/var/www/site/index.uce"), "\n");
 
 :see
 >sys
-
-:content
-Isolates the file name component from a path or file name.
-
-:example
-print("basename example\n");
+dirname
+path_join