1. instal CAMx first, https://camx.com/. ctags used, but that comes with vim
2. go to the top directory of camx installation, and git clone https://github.com/yosukefk/vim_for_camx.git
3. cd vim_for_camx; make

from vim,

1. ctags has set up, so you can CTRL-] to jump to definition of a function, for example. see https://vimhelp.org/tagsrch.txt.html , or page like this https://kulkarniamit.github.io/whatwhyhow/howto/use-vim-ctags.html
2. keywordprg is set to search the include files in /Include dir. so K on variable would find the defintion of variables
3. code block like "=== Source Apportion Begin ===" are folded. if you need to see content, zo, and close again with zc. see https://vimhelp.org/fold.txt.html , or find some info for "vim folding"