X-Git-Url: https://sipb.mit.edu/gitweb.cgi/wiki.git/blobdiff_plain/8b43e296791b610df21e14f8ce135cb0b7bdc9a0..8d6c7cd7efde6ea44a9f6e73c7cfe82df69256b3:/doc/UsingScreen?ds=sidebyside

diff --git a/doc/UsingScreen b/doc/UsingScreen
index f823f0d..eb0f875 100644
--- a/doc/UsingScreen
+++ b/doc/UsingScreen
@@ -9,20 +9,37 @@ to allow the same session to be simultaneously accessed from multiple places.
 
 == Getting Started ==
 
-1.  Pick a machine to run your screen session on.  If you don't know of any options, linux.mit.edu (Linerva) is a good choice.
-2.  ssh to that machine.
-3.  run {{{screen}}}
-4.  Do stuff.
+ 1.  Pick a machine to run your screen session on.  If you don't know of any options, linux.mit.edu (Linerva) is a good choice.
+ 2.  ssh to that machine.
+ 3.  run {{{screen}}}
+ 4.  Do stuff.
 
 To detach, type "C-a d".  To reattach, type {{{screen -dr}}}
 
 If you close your ssh connection without detaching, or lose your network connection.
 
-1.  run {{{screen -dr}}}
-2.  Do stuff.
+ 1.  run {{{screen -dr}}}
+ 2.  Do stuff.
+
+The {{{-dr}}} means "find my screen session, detach it from wherever it's attached if it's attached, and reattach it here."
 
 Once you're comfortable with this, hit "C-a C-c".  This creates what screen calls a new "window"; it should give you a new shell prompt,
 and you can do stuff at it.  If you want to switch back to the old "window", hit "C-a C-a".   You can create as many "windows" as you want;  you can
-switch to the first 10 of them with "C-a 0" through "C-a 9" and see a list of what's open with "C-a w".
+switch to the first 10 of them with "C-a 0" through "C-a 9" and see a list of what's open with "C-a w".  ("C-a C-a" actually means "switch to the previously
+used window".)
+
+A useful shorthand: {{{screen -dR}}} is like {{{screen -dr}}} except it adds a "if I don't already have a session, create one" step.
+
+You can use {{{screen -x}}} to attach a screen session that's already attached somewhere without detaching it first.  This can
+have side effects if the other place is already attached or is in a window that is a different size than your current one.
+It's useful when you want to share context between different screens, or even different people, but doing it when you're not
+sure where else your screen might be attached has privacy implications.
+
+== For More Information ==
+
+{{{screen}}} can do lots of stuff.   If you have a while to burn, run {{{man screen}}} at the shell prompt.   It may be helpful to do this inside of screen
+so you can put it down and come back to it later.
 
+=== TODO ===
 
+clean up, explain the "C-a C-a" notation.
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