I recommend installing the OpenCTags plugin for Notepad ++ . It relies on CTags, which you can also download from your page. Upon first use (pressing ALT-SPACE to jump to a character as the name of a function), CTags will be called to create DB tags.
When you jump to a character, OpenCTags saves history. Then you can use ALT-P and ALT-N to go back and forth (= previous and next). You can also find all your commands in the Notepad ++ plugins menu under OpenCTags.
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