diff --git a/infrastructure_and_operations/ops_handbook/tmux_for_collaboration_in_terminal.myco b/infrastructure_and_operations/ops_handbook/tmux_for_collaboration_in_terminal.myco
index 0053247..6aa68b0 100644
--- a/infrastructure_and_operations/ops_handbook/tmux_for_collaboration_in_terminal.myco
+++ b/infrastructure_and_operations/ops_handbook/tmux_for_collaboration_in_terminal.myco
@@ -18,3 +18,3 @@ Tmux command mode is only good for one command, once you press another key, it w
-**Zico says:**
+**zico says:**
@@ -22,4 +22,13 @@ Tmux command mode is only good for one command, once you press another key, it w
+For copy and paste, enter copy mode with `Ctrl+b [`, then start selecting text with `Ctrl+Space`. When you've selected the text you want, copy it with `Ctrl+w`, which also exits copy mode. Paste this copied buffer with `Ctrl+b ]`. And yes, it's annoyingly complicated.
+
+TERMINOLOGY: Windows and Panes
+in tmux, windows are basically tabs, and panes are visual divisions in each window. `Ctrl+b c` will make a new window, and `Ctrl+b n` and `Ctrl+b p` will switch between windowns (next and previous). To divide a window vertically, use `Ctrl+b %`. For horizontal division, use `Ctrl+b "`.
+
+To close a pane or window, simply use `Ctrl+d` or type `exit` like a normal terminal instance. If it is frozen or won't close for whatever reason, use `Ctrl+b x` to kill a pane or `Ctrl+b k` to kill a window.
+
+As Forest says, you can exit out of the tmux session while leaving it running in the background (including leaving open commands running) with `Ctrl+b d`. When you wish to rejoin the session, use the command `tmux a`.
+
**nibz says**
-`Ctrl+b n` to go to next pane
\ No newline at end of file
+`Ctrl+b n` to go to next window
\ No newline at end of file