Endless .vimrc tweaking

.vimrc

@@ -9,8 +9,8 @@ set noerrorbells visualbell t_vb=                    " no sound on errors
 autocmd! bufwritepost .vimrc source ~/.vimrc         " When vimrc is edited, reload it
 
 set autoread                                         " set to auto read when a file is changed from the outside
-set cursorcolumn                                     " highlight current column
-set cursorline                                       " highlight current row
+"set cursorcolumn                                     " highlight current column
+"set cursorline                                       " highlight current row
 set incsearch                                        " make search act like search in modern browsers
 set showmatch                                        " show matching brackets when text indicator is over them
 
@@ -24,8 +24,8 @@ set hidden                                           " Allow background buffers
 set splitright                                       " Split to right by default
 
 " Text Wrapping
-set textwidth=119
-set colorcolumn=120
+set textwidth=120
+set colorcolumn=121
 set nowrap
 
 " Search and Substitute
@@ -78,7 +78,8 @@ call plug#end()
 " ==> Colors 
 "
 "set termguicolors
-colorscheme slate 
+"colorscheme slate 
+colorscheme marklar
 
 " ----------------------------------------------------------------------------------------------------
 " ==> Autocompletion 
@@ -171,6 +172,9 @@ imap <F4> <C-R>=strftime("%H:%M")<CR>
 "      (http://stackoverflow.com/questions/6008921/how-do-i-change-the-highlight-style-in-vim-spellcheck)
 "      Vim Colors: (http://alvinalexander.com/linux/vi-vim-editor-color-scheme-syntax)
 
+" Toggle spell check with F10
+nnoremap <F10> :setlocal spell! spelllang=en_us<CR>
+" Save custom dictionary in ~/Documents
 set spell spelllang=en_us
 set spellfile=$HOME/Documents/en.utf-8.add
 hi clear SpellBad
@@ -179,8 +183,8 @@ hi clear SpellErrors
 hi clear SpellLocal
 hi clear SpellRare
 hi SpellBad cterm=underline,bold ctermfg=red
-hi SpellCap cterm=underline,bold ctermfg=cyan
-hi SpellErrors cterm=underline,bold ctermfg=cyan
+hi SpellCap cterm=underline,bold ctermfg=blue
+hi SpellErrors cterm=underline,bold ctermfg=blue
  
 " -----------------------------------------------------------------------------------------------------
 " ===> Spellcheck: only certain file types https://robots.thoughtbot.com/vim-spell-checking
@@ -230,3 +234,11 @@ autocmd BufWritePre,filewritepre *.md,*.mkd execute "normal ma"
 autocmd BufWritePre,filewritepre *.md,*.mkd exe "g/Updated:.*/s//Updated: " .strftime("%c")
 autocmd bufWritePost,filewritepost *.md,*.mkd execute "normal `a"
 
+" -----------------------------------------------------------------------------------------------------
+" ==> netrw - NERDtree like setup (https://shapeshed.com/vim-netrw/)
+let g:netrw_banner = 0
+let g:netrw_liststyle = 3
+let g:netrw_browse_split = 4
+let g:netrw_altv = 1
+let g:netrw_winsize = 25
+