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diff --git a/documentation/todo.txt b/documentation/todo.txt
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--- a/documentation/todo.txt
+++ b/documentation/todo.txt
@@ -4,30 +4,25 @@ Firewire (Windows) driver:
 - Not working correctly for AcquireTime initially - absolute/device mode
   problem
 
-Prosilica driver:
-- Switching 8/16 bits does not work until size or some other PV is processed.
-
-- Transform plugin: write documentation
-
-- Add cross-sections to Stats plugin?
-
-- Prosilica once I fixed stale frame bug it won't exit when acquiring if very
-  busy
-
-- Change startup scripts, auto_settings.req, ADTop.adl and medm screens for
-  every detector
-
-
 Longer term:
 
     General
 
 - Supports 64-bits
 
+- Redo locking mechanism so plugins can reprocess data when something changes?
+  - One lock for parameter library, another lock for messageQueue, etc?
+  - Make overlay plugin do updates when values are changed even if new frame not acquired, etc.
+
 - Document NeXus file plugin - add XML file documentation
 
+- Transform plugin: write documentation
+
 - Performance measurements
 
+- Prosilica once I fixed stale frame bug it won't exit when acquiring if very
+  busy
+
 - Implement and improve connection management
 
     asynPortDriver