document custom variables and the update_gui command

diff --git a/README b/README
index 00d8db9..3314bf7 100644 (file)
--- a/README
+++ b/README
@@ -160,6 +160,8 @@ The following commands are recognized:
    - use for chaining multiple commands
    - remember to quote the commands; one command must come as one parameter
    - if you use `chain` with a handler script which must return some output (such as a cookie handler -- uzbl will wait for and use its output), use sync_spawn or sync_sh instead of spawn or sh in the command that should give the output
+* `update_gui`
+   - update the contents of the status and title bars
 
 ### VARIABLES AND CONSTANTS
 Uzbl has a lot of internal variables and constants.  You can get the values (using the `print` command, see above), and for variables you can also change the value at
@@ -167,6 +169,8 @@ runtime.  Some of the values can be passed at start up through commandline argum
 Some of them have default values (see config.h)
 Some variables have callback functions which will get called after setting the variable to perform some additional logic (see below)
 
+Besides the builtin variables you can also define your own ones and use them in the exact same way as the buitin ones.
+
 * Variables:
   - uri (callback: load the uri)
   - verbose: affects output on stdout