I would go straight to vim and type: "/section_start<cr>", which navigates straight to that line. Then navigate to the line, "i" to enter insert mode, make edit

I would go straight to vim and type: "/section_start<cr>", which navigates straight to that line. Then navigate to the line, "i" to enter insert mode, make edits, and "<esc>:wq<cr>". It is absolutely a learning curve, but the power of vim is insane. "dd" deletes lines, "A" appends to the end, "I" inserts at the beginning, "<lineno>G" jumps to a line number, all little tweaks that I use nearly every day in editing files quickly. It's especially nice when editing known_hosts where it tells you the line of the offending key, just "<line#>Gdd:wq" and it's done.