diff --git a/TODO b/TODO
index dda0e0fd3..b541cdb5c 100644
--- a/TODO
+++ b/TODO
@@ -11,20 +11,17 @@ INTERPRETER
 - Add global parameters for each component. Or no, a global configuration repository, to
   tell, for example, which socket the mysql component must use...
 - Make objects printable, with a "_print" hidden method or something else.
-- Make objects writable and readable to streams.
 - Type mismatch error: print the mismatched values.
 - Special runtime debugging commands for dumping all the variables for example.
 - A new debugging compilation option to only put line number information in the output files.
 - If project compilation version < compiler version then => compile all
 - Catch kill signal to remove temporary files.
-- Sorting two or more arrays at the same time.
 - MOD with floats.
 - Make the error information associated with the current stack frame.
 - Timer.TimeLeft.
 - OPEN ... LOCK. True lock while reading/writing a file.
 - select() system call can fail if a watched file descriptor is in error. But how can I know
-  the offending file descritor? Maybe by using poll() instead.
-- Find a way to optimize the &= operator.
+  the offending file descriptor? Maybe by using poll() instead.
 
 DEBUGGER
 
@@ -46,7 +43,6 @@ GUI RELATED STUFF
 
 - Deleting a currently expanding item in TreeView crashes.
 - ValueBox.Value should be visible in the IDE.
-- Moveable tabs.
 - ListView and GridView selection interface should be the same.
 - More clever vertical toolbar.
 
@@ -61,7 +57,6 @@ DATABASE COMPONENT
 - Returns the number of records affected by a query.
 - A new database driver model.
 - Copy a result line into another one.
-- Use SAVEPOINT in postgresql to simulate nested transactions.
 
 DOCUMENTATION WIKI