--- a/PROJECTS
+++ b/PROJECTS
@@ -118,6 +118,10 @@
 
   * Make it possible to check the current graphics terminal type.
 
+  * If possible, pass data to gnuplot without using temporary files.
+
+  * If possible, pass binary data to gnuplot to speed things up.
+
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 Strings:
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@@ -133,6 +137,12 @@
   * Consider changing the default value of `string_fill_char' from SPC
     to NUL.
 
+  * Consider making size ("") ==> [0, 0] for compatibility with
+    Matlab, at least when some preference variable is set.
+
+  * Consider making ["test", []] ==> "test", for compatibility with
+    Matlab, at least when some set of preferences are set.
+
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 Other Data Types:
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