If you know a node’s name, you can go there by typing g, the name, and RET. Thus, gTopRET would go to the node called ‘Top’ in this file. (This is equivalent to t, see Help-Int.) gGo to nodeRET would come back here.
Unlike m, g does not allow the use of abbreviations. But it does allow completion, so you can type TAB to complete a partial node name.
To go to a node in another file, you can include the file name in the node name by putting it at the front, in parentheses. Thus, g(dir)TopRET would go to the Info Directory node, which is the node ‘Top’ in the Info file dir. Likewise, g(emacs)TopRET (or just g(emacs)RET) goes to the top node of the Emacs manual.
The node name ‘*’ specifies the whole file. So you can look at all of the current file by typing g*RET or all of any other file with g(filename)*RET.