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-rw-r--r--software/idl.page13
1 files changed, 12 insertions, 1 deletions
diff --git a/software/idl.page b/software/idl.page
index 1411584..00b444a 100644
--- a/software/idl.page
+++ b/software/idl.page
@@ -31,4 +31,15 @@ Command Interface
Instead of the ever-standard ``!`` to execute system commands, use ``$``.
-
+X Windows
+--------------
+When used remotely with X Windows, sometimes plots don't refresh correctly
+(eg, blacked out after another window has covered them). To correct this issue,
+add these lines to your ``~/.Xdefaults``::
+
+ !stuff to manage IDL under 24-bit Linux displays
+ idl.retain:2
+ idl.gr_visual: TrueColor
+
+and then run ``xrdb -merge ~/.Xdefault``. (This tip from
+http://star.pst.qub.ac.uk/help/idl.shtml)