After your have created a new node, you may want to narrow to it; and you may want to widen the file. The commands are:
C-c C-p n para-narrow-to-node narrow the region so you have access only to the current node
C-x w widen remove restrictions from current buffer, allowing full text to be seen and edited
(The `widen' command is the standard Emacs command; the default keybinding for `para-narrow-to-node' is the exception to the rule that letters are for creation or insertion commands.)
If you remove restrictions from current buffer, you may still use one of the Info movement commands, but if you do, the buffer will automatically become narrowed.