diff --git a/.gitignore b/.gitignore
index 29c94c7..0b6a18f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ tmp
 __pycache__
 d2/book1/books
 .DS_Store
+.vim
diff --git a/dotfiles/.vimrc b/dotfiles/.vimrc
index 85398c5..f820599 100644
--- a/dotfiles/.vimrc
+++ b/dotfiles/.vimrc
@@ -31,19 +31,33 @@ hi MatchParen guifg=white guibg=black gui=NONE ctermfg=1 ctermbg=0
 
 function! MakeSession()
   let b:sessiondir = '.vim/'
+  if exists('g:session_name')
+    let b:session_name = g:session_name
+  else
+    let b:session_name = 'session'
+  endif
+
   if (filewritable(b:sessiondir) != 2)
     exe 'silent !mkdir -p ' b:sessiondir
     redraw!
   endif
-  let b:filename = b:sessiondir . '/session.vim'
+  let b:filename = b:sessiondir . '/' . b:session_name . '.vim'
   exe "mksession! " . b:filename
+  echo 'saved ' . b:session_name
 endfunction
 
 function! LoadSession()
   let b:sessiondir = '.vim/'
-  let b:sessionfile = b:sessiondir . "/session.vim"
-  if (filereadable(b:sessionfile))
-    exe 'source ' b:sessionfile
+  if exists('g:session_name')
+    let b:session_name = g:session_name
+  else
+    let b:session_name = 'session'
+  endif
+
+  let b:filename = b:sessiondir . '/' . b:session_name . '.vim'
+  if (filereadable(b:filename))
+    exe 'source ' b:filename
+    " echo 'loaded ' . b:session_name
   else
     echo "No session loaded."
   endif
@@ -56,6 +70,7 @@ map <Leader>z :wqa<CR>
 map <Leader>m :py3 f1()<CR>
 map <Leader>r :redraw!<CR>
 map <Leader>s :call MakeSession()<CR>
+map <Leader>% :let g:session_name = 'session'
 map <Leader>l :call LoadSession()
 map <Leader>cq :cq<CR>
 map <Leader>f2 :py3 f2()<CR>