commands/cli: Added comment to explain multiple root support in Parse

commands/cli/parse.go

@@ -11,6 +11,8 @@ import (
 
 // Parse parses the input commandline string (cmd, flags, and args).
 // returns the corresponding command Request object.
+// Multiple root commands are supported:
+// Parse will search each root to find the one that best matches the requested subcommand.
 func Parse(input []string, roots ...*cmds.Command) (cmds.Request, *cmds.Command, *cmds.Command, []string, error) {
 	var root, cmd *cmds.Command
 	var path, stringArgs []string