diff --git a/DDDigi/README.md b/DDDigi/README.md
index b2b4640d616aa505ddbe65ce7301103848df3c12..3a005db7165ab67cde36573b040d8eed7d8871f6 100644
--- a/DDDigi/README.md
+++ b/DDDigi/README.md
@@ -75,13 +75,72 @@ DDDigi Components Description
Functionality: self explaining
-- <large>DigiAttenuator</large>
-
- <large>Deposit attenuator for energy deposits according to decay time constant. </large><br/>
+- DigiEventAction
+
+ Generic event level action which can execute workers in parallel
+ Properties: <br/>
+ |**Property** |**Data type** |**Description** |
+ |:--- |:--- |:--- |
+ |`.parallel` | boolean | Flag to indicate parallel action execution |
+
+- DigiContainerProcessor
+
+ Base class of all actors dealing with one of more containers sequentially.<br/>
+
+- DigiContainerSequence
+
+ Sequencer of `DigiContainerProcessor` entities with container based work load splitting.<br/>
+
Properties: <br/>
|**Property** |**Data type** |**Description** |
|:--- |:--- |:--- |
- |`.input` | vector<string> | List of input files to be processed |
+ |`.parallel` | boolean | Flag to indicate parallel action execution |
+
+- DigiContainerSequenceAction
+
+ Specialization of the `DigiEventAction`.
+ Process continers from the data store according to the `input_segment` and the `input_mask`.
+ Output of workers is delivered to the `output_segment` with mask `output_mask`.
+
+ Properties: Properties of the `DigiEventAction` apply!<br/>
+
+ |**Property** |**Data type** |**Description** |
+ |:--- |:--- |:--- |
+ |`.input_segment` | string | Name of the input data segment |
+ |`.input_mask` | integer | Mask identifier of the input containers to be processed |
+ |`.output_segment`| string | Name of the output data segment |
+ |`.output_mask` | integer | Mask identifier of the output containers |
+
+- DigiMultiContainerProcessor
+
+ Specialization of the `DigiEventAction`.
+ Process multiple containers from the data store according to the `input_segment` and the list of `input_masks`. Allows to re-use the same container action.
+ Output of workers is delivered to the `output_segment` with mask `output_mask`.
+
+ Properties: Properties of the `DigiEventAction` apply!<br/>
+
+ |**Property** |**Data type** |**Description** |
+ |:--- |:--- |:--- |
+ |`.input_segment` | string | Name of the input data segment |
+ |`.input_mask` | integer | Mask identifier of the input containers to be processed |
+ |`.output_segment`| string | Name of the output data segment |
+ |`.output_mask` | integer | Mask identifier of the output containers |
+
+- DigiAttenuator
+
+ Deposit attenuator for energy deposits according to decay time constant. <br/>
+ Action functor of the `DigiAttenuatorSequence` <br/>
+ Properties: Properties of the `DigiContainerSequenceProcessor` apply! <br/>
+ |**Property** |**Data type** |**Description** |
+ |:--- |:--- |:--- |
+ |`.factor` | double | Signal reduction factor applied to all entries processed |
+
+- DigiAttenuatorSequence
+
+ Container sequencer to attenuate a list of containers.
+ Properties: Properties of the `DigiContainerSequenceAction` apply! <br/>
+ |**Property** |**Data type** |**Description** |
+ |:--- |:--- |:--- |
|`.processor_type`| string | Processor type used for single container attenuation. |
| | | default: `DigiAttenuator` |
|`.containers` | vector<string> | List of containers to be attenuated. |