Working paper


31 May 2012


High-level group for strategic developments in business architecture in statistics (HLG-BAS)

Meeting, 8 June 2012





Decisions requested from the HLG-BAS

The key decisions now requested from HLG-BAS as Project Sponsors in order to confirm planning and resourcing are:

  1. Agreement to the business plan for the further development of GSIM V1.0 through to December 2012.

             Confirmation of the business plan will complete Activity 2 of the GSIM Roadmap.


  1. Acknowledgement and support for the project resource requirements and work program timeframes.

             The support of HLG-BAS is crucial to ensure that the composition of the work teams includes the required expertise from national and international statistical agencies; and that these people have adequate time to contribute fully to the work. (See risks outlined in Section V: paragraphs 24 – 27).


  1. Agreement in principle to the proposal for the Layer Integration Workshop

(See Annex 3).

GSIM Development Business Plan

I.   Introduction

1.              At a meeting on 26-27 April, HLG-BAS reviewed a roadmap outlining the work required to progress from GSIM V0.4, as delivered by Sprint 2, to GSIM V1.0 which could be applied in practice. 

2.              At this meeting, HLG-BAS agreed that work to develop GSIM should be run as the GSIM Development Project and requested a Business Plan to ensure the completion of GSIM V1.0 by December 2012.

3.              This document presents the Business Plan requested by HLG-BAS.  It addresses topics on the management and resourcing of the project.

II.          Project overview

4.              On 27 April, HLG-BAS considered the roadmap for the further development of GSIM.    Figure 1 provides a high-level illustration of the proposed timeline for the GSIM Development Project and demonstrates the interdependencies between the project work-streams. Further detail on the ten high level tasks can be found in Annex 1.

Figure 1: High-level overview of the GSIM Development Project Roadmap


III.       Governance and management of GSIM development project


5.              HLG-BAS is the sponsor for the GSIM Development Project.  Accordingly, project governance will be managed in line with the proposal in the HLG-BAS Strategy.   It is suggested that five additional members join the HLG-BAS Secretariat to form a GSIM Development Steering Group (DSG) to oversee this project.  This is in recognition of the significant leadership and investment of the Statistical Network (SN) in the GSIM development. SN members proposed to join the DSG are representatives from Sweden, New Zealand, United Kingdom and Italy.

6.              A Project Manager (PM) will be appointed. They will be responsible for management, monitoring, co-ordination, reporting and delivery of all aspects of the project.  A description of the Project Manager role is in Annex 2.  The Project Manager will report regularly to the DSG.

7.              The GSIM Integration Team (GIT) will provide specialist knowledge and expertise to ensure that a comprehensive, integrated product (GSIM V1.0) is derived from the work produced by the specialist teams.  The Project Manager will convene the GIT.

Figure 2: Proposed governance structure for the GSIM development project

Project management and reporting arrangements

8.              In order to be confident that the roadmap will be followed and produce GSIM V1.0 by December 2012, appropriate project management arrangements will be established quickly.  This is essential so that activities along the critical path are completed on time.  Work on the detailed Specification Layer is a particularly relevant in this regard.

9.              Robust project management is needed to ensure the completion of the GSIM Development Project within the agreed timeframes. The project manager will ensure that:

  • Detailed project plans and reporting arrangements are in place for all activities;
  • Task teams are commissioned and briefed, team leaders are appointed and that teams follow a clear plan to ensure delivery of outputs by the due date;
  • Resource estimates reflect project requirements and are available to allow successful completion of all activities;
  • Agreed governance arrangements for the project overall and all activities within the project are implemented;
  • All project activities are aligned, integrated and deliver timely outputs consistent with expectations;
  • All stakeholders are appropriately informed about the progress of the project.

10.         The project manager will develop standard, simple templates for the use of Task Team leaders for project planning, risk management and reporting.

Task Teams

11.         A major program of work is required to complete the detailed work involved in the Specification Layer of the GSIM.  For efficiency, four Specification Layer Task Teams (SLTTs), each with a focus on different parts of the GSIM model, will be commissioned to undertake this work.   A draft of this detailed work will be completed by 31 August 2012.

12.         A Modelling Team will be created to work with the SLTTs to develop a consistent, standards aligned, formal specification for GSIM. This team will also support the GSIM Integration Team in its work to develop GSIM V0.8.

13.         Two smaller Task Teams will be appointed in late September 2012 to develop the User Guide to be released as part of GSIM V1.0 and the GSIM Communications Plan.

14.         A full description of the role, deliverables, resourcing, scope and proposed membership for each Task Team is provided at Annex 2.  Gaining commitment to membership for these groups is a critical dependency for the GSIM project.

Figure 3: Proposed Task Teams for completing initial design of GSIM Specification Layer

Managing Effective Collaboration and Communication

15.         All project activities will be conducted through virtual communications, utilising online conferencing tools (i.e. Webex). The PM and team leaders will act as the contact points for communication across teams. All project working documents will be managed in a designated area on the UNECE wiki. 

16.         It is proposed that a one week workshop will be attended by members of the GSIM Integration Team, to review the consolidated design proposal for the Specification Layer and input received from external reviewers of GSIM V0.4. See Annex 3 for further details on the Layer Integration Workshop.

IV.       Resource Requirements

Overview of Resources

17.         Table 1 provides an overview of indicative resource requirements for the completion of major program activities through to the production of GSIM V1.0.  

Table 1: Estimated Resource Requirements to deliver GSIM V1.0



Duration of Task

Team Leader

Team members

Project Manager


11 Jun- 16 Nov 2012 (full-time)



Modelling Team


11 Jun – 16 Nov 2012

80 working days

42 working days each

GSIM Integration Team


11 Jun – 16 Nov 2012

GSIM Project Manager

30 working days each

Specification Layer Task Teams (4)


11 Jun – 31 Aug 2012


30 working days

20 working days each

Communications Plan Task Team


1 Sept - 30 Nov 2012

10 working days

5 working days each

User Guide Task Team


30 Sept - 1 Dec 2012

15 working days

10 working days

18.         There are two streams of funding for this project. The project will predominantly be resourced through ‘in kind’ contributions from statistical organisations providing the required business expertise for specified roles and work tasks.   

19.         The second stream of funding will be through financial contributions from Member States. This funding will help to fund a contracted professional as the Project Manager and the contracted experts for the Modelling Team. Contracts for these resources will be organised by the UNECE.

Project Manager

20.         A project manager will be appointed for the duration of the GSIM development project.  The project manager will assume overall responsibility for the co-ordinated and successful completion of this multifaceted program of work.  The project manager will have strong leadership and negotiation skills.  A key part of the role will be to anticipate and resolve risks and issues for the project before these have a serious impact on delivery of the work program. 

21.         The level of remuneration for the project manager will be commensurate with the professional skills and abilities they will be required to provide and the level of responsibility for delivering results they are expected to assume.

Modelling Experts

22.         Expert consultants will be engaged to lead and inform the modelling required to design the GSIM and ensure that it can be applied to all types of statistics, in all countries.

V.         Risk management 

23.         The project faces challenges in its implementation, due to the accelerated development timeframe and the subject matter complexity. As such, the key risks associated with the project relate to resourcing, project co-ordination and communication. 

24.         A risk management plan will be developed by the Project Manager as an early priority. The project manager will report on risk management to the DSG.  A critical risk to be brought to the attention of HLG BAS is outlined in paragraphs 24 – 27.

25.         The project is predominately resourced by ‘in kind’ contributions from a limited and highly valuable pool of expertise.  The timing of the project, with major workload occurring in the northern hemisphere summer, may impact availability of expertise.

26.         The Specification Layer Task Teams constitute a major body of work and require the largest contribution of expertise.  Delays in formation and work progress in these teams will impact on the critical path for the entire project and also delay the delivery of GSIM V1.0.

27.         It is critical that the project attracts sufficient support from statistical organisations to make available the required business expertise for sufficient time to complete development within the project schedule. 

28.         HLG-BAS can have a significant mitigating role by supporting and encouraging contributions from suitable experts to these teams.

29.         Effective coordination of project activities will be required to ensure efficient and coordinated deployment of valuable resources.  Managing cross-project communications will be critical, as well as informing, engaging and resolving perspectives from a diverse range of interested stakeholders. 

VI.       Stakeholder engagement and communications

30.         Throughout the GSIM Development project, it is essential to ensure that the project maintains effective communication with interested stakeholders as well as effectively attracting and managing feedback on the GSIM drafts.  A separate communication strategy (Activity 8) will be developed for the completed GSIM V1.0. 

31.         The project manager will maintain and update a project stakeholder register.  Previous Sprint team members as well as the Sprint practitioner group will be regularly consulted by the Task Teams to provide input and feedback.

32.         GSIM Development Project communications will include the following activities:

  • Keeping all Stakeholders informed and involved
  • Raising awareness of stakeholders about V0.8 draft for consultation
  • Seek feedback from main stakeholders on V0.8
  • Keep track of all correspondence and collating feedback responses.

Annex 1: Roadmap for the Development of GSIM V1.0

Activity 1:

Develop Specification Layer


To be completed by 31 August 2012

This activity will take the longest elapsed time for the project and will require the most resources.  The outputs from this work will feed into the Layer Integration Workshop.


Responsible: The four Specification Layer Task Teams supported by a Modelling Team.


Activity 2:

Confirm management plan and resource plan for progressing from V0.4 to V1.0


To be completed by 8 June 2012

This Business Plan specifies the management plan for the GSIM Development Project and identifies the resources which must be made available in order to undertake it successfully.






Responsible: HLG-BAS / Secretariat Team


Activity 3:

Establish and confirm an appropriate set of “use cases” for validation purposes












To be completed by 25 June 2012


Practical, well documented and readily applied “use cases” (detailed examples of business processes that GSIM needs to support) have been essential to support and validate development of GSIM to date and will remain so when progressing from V0.4 to V1.0. 


Overall requirements for use cases, ensuring adequate representation of different types of production processes and different phases of the GSBPM, need to be established.  The set of use cases defined to date can be assessed against these requirements and, if necessary, new use cases added and/or additional detail added to existing use cases.  


Practical business process use cases will be essential material for reference and validation purposes for the task teams that develop the Specification Layer.  They will also be used more generally to validate V0.8 of GSIM and the proposed V1.0.


Responsible: GSIM Development Steering Group / GSIM Integration Team


Activity 4:

Manage external review process for GSIM V0.4



To be completed by 7 July 2012

GSIM V0.4 was released for general review onto the METIS wiki on 11 May, with comments closing by 15 June 2012.  The comments will be put into a disposition log so that they can be reviewed by the relevant SLTTs and the GIT.  These teams will decide whether, and how, each comment should be reflected in the design of GSIM V0.8.


Responsible: Project Manager / Specification Layer Task Teams / GSIM Integration Team

Activity 5:

Organise and conduct GSIM Layer Integration Workshop



To be conducted 17-22 September 2012

A one-week ‘Layer Integration’ workshop will be held from 17-22 September.  The Workshop will bring together GSIM experts to:

  •           review the initial consolidated design proposal for the Specification Layer
  •           review proposed updates to the Overview Layer and Communication Layer based on reviewer feedback on GSIM V0.4


Responsible: GSIM Development Steering Group / Project Manager


Activity 6:

Manage external review process for GSIM V0.8



To be completed by 29 October 2012

GSIM V0.8 will include all three layers, namely the Overview, Communication and Specification Layers.  It will be released following the Layer Integration Workshop. 


Reviewer feedback on V0.8 is due by the end of October 2012 and will feed into GSIM V1.0.


Responsible: GSIM Development Steering Group / Project Manager


Activity 7:

Confirm governance processes for GSIM V1.0



To be completed by 27 August 2012

Governance arrangements for GSIM V1.0 and beyond include two important main requirements:

  •           Identify the process which needs to be followed in order to have GSIM V1.0 “confirmed”/”endorsed” so that it becomes internationally recognised as the first complete version of GSIM
  •           Identify what arrangements will be put in place to maintain and support GSIM after it is released as V1.0.


Responsible: GSIM Development Steering Group / HLG-BAS


Activity 8:

Develop communication plan for GSIM V1.0



To be completed by 29 October 2012

There are a significant number of stakeholders to be informed about GSIM V1.0, and encouraged to harness it in practice.  A communication plan will ensure that:

  •           appropriate supporting material is available when GSIM V1.0 is released; and
  •           stakeholders are informed, engaged and encouraged appropriately once GSIM V1.0 is released.


Responsible: Communication Plan Task Team


Activity 9:

Prepare GSIM User Guide


To be completed by 29 October 2012

A User Guide will be developed to assist users in applying GSIM V1.0 for communication and specification purposes in a consistent and effective manner.



Responsible: User Guide Task Team


Activity 10:

Finalise GSIM V1.0 Specifications



















To be completed by 17 December 2012


After comments have been received from GSIM V0.8, the GSIM Integration Team will analyse and address the external review feedback on all three layers of GSIM V0.8 (Activity 6).  It will draft the proposed specification of GSIM V1.0; including making sure that there is alignment and consistency between all elements of the GSIM V1.0 specification package.  It is essential that the Communication Plan (Activity 8) and User Guide (Activity 9) are fully consistent with the GSIM V1.0 specification and are appropriate to support its release.


The final proposed specification for GSIM V1.0 would be introduced to HLG-BAS, and the expert groups associated with HLG-BAS, at the 2nd annual workshop on Business Architecture for Statistics to be held on 7-8 November.


The specification will then be submitted to the high level approval process (yet to be determined) for having GSIM V1.0 recognised internationally.  Depending on the process required for final approval, GSIM V1.0 is targeted for official release on 17 December 2012.


Responsible: GSIM Integration Team / GSIM Development Steering Group/ Project Manager

Annex 2: GSIM Development Project Roles










  •           Business Plan endorsement 8 June 2012
  •           HLG-BAS Workshop 7-8 November 2012
  •           GSIM V1.0 submitted for endorsement as an international standard in mid-December 2012



  •           Authorise the business plan for the Project
  •           Enact the process for endorsement of GSIM V1.0
  •           Decommission  the GSIM development project
  •           Agree and commission arrangements for GSIM V1.0 maintenance and support after its release.
  •           Reporting to CES on 6-8 June 2012



Leadership & Direction


GSIM Development Steering Group  (DSG)





HLG-BAS Secretariat + Statistical Network nominees from Sweden, New Zealand, United Kingdom and Italy.



8 June -31 December 2012



  •           Brief  HLG-BAS on high level project progress
  •           Escalate project risks and issues to the attention of HLG-BAS where relevant (e.g. resourcing)



  •           Conduct regular monthly meetings
  •           Work with the Project Manager to provide guidance and support to ensure the authorized Business Plan is implemented; including making timely “out of session” decisions 




GSIM Project Manager (PM)



The Project Manager has overall responsibility for the co-ordinated and successful completion of the activities required to complete development of GSIM V1.0, as documented in the Business Plan.



To Be Confirmed



8 June – 31 December 2012



Steven Vale, UNECE
GSIM Development Steering Group

GSIM Task Team leaders,

GSIM Integration Team


Milestones& Deliverables

  •           Detailed project plan
  •           Common methods and tools for task teams
  •           Weekly meetings with task team leaders
  •           Weekly status reports to steering group
  •           Weekly updates to risk and issue register
  •           Integrated documentation / files for GSIM Integration Team
  •           GSIM Project web site, mailing list(s) and communication



  •           Coordinate establishment of GSIM Task Teams and the nomination of team leaders
  •           Provide support to Task Teams in establishing their approach to the work using common methods and tools (to facilitate integration)
  •           Develop detailed project plan in collaboration with each task team leader
  •           Establish project management and reporting processes
  •           Develop a risk management plan
  •           Ensure deliverables are achieved within the agreed timeframe by monitoring progress of the teams, identifying risks and addressing any issues with support from project sponsors
  •           Provide regular status updates to project sponsors and stakeholders
  •           Coordinate communication between teams and steering group and with other stakeholders
  •           Maintain project web site and documentation
  •           Act as a point of contact for the GSIM Project and ensure stakeholders are kept informed


Resource Commitment


Full time role


GSIM Integration Team (GIT)


GIT is the overarching working group for completing development of GSIM V1.0 as an internationally recognised framework/standard. 

The group will ensure GSIM V1.0 is developed as a coherently designed, internally consistent, product which meets the needs of all its different audiences.

Proposed Membership

13 members drawn from business, methodology, IT and informatics backgrounds, including participants from Sprint 1 & 2.

* Indicates unconfirmed /‘wish list’ participants

  1.        GSIM Project Manager
  2.        Alistair Hamilton (ABS)
  3.        Rob McLellan (Statistics Canada)
  4.        Adam Brown (Statistics New Zealand)
  5.        Steven Vale (UNECE)
  6.        * Jenny Linnerud (Statistics Norway)
  7.        Rudi Seljak & Tomaz Speh as a team (Statistics Slovenia)
  8.        * Eurostat representative
  9.        * Statistics Netherlands representative
  10.    * Statistics Sweden representative
  11.    ..


8 June -31 December 2012

Milestones &


Integrated Specification Layer by 14 September 2012

GSIM V0.8 by 1 October 2012

GSIM V1.0 by 5 November 2012 (draft)

GSIM V1.0 by 17 November 2012


In fulfilling their role, members of the GIT will:

  •           Act as a business reference group across  the four Specification Layer task teams
  •           Analyse relevant feedback from reviewers in regard to GSIM V0.4 and V0.8
  •           Attend the Layer Integration Workshop from 17-21 September.
  •           Assist in finalising the documentation of GSIM V0.8 and finalising GSIM V1.0 
  •           Members of GIT will finalise the proposed specification for GSIM V1.0.
  •           Identify experts who could usefully be consulted and/or validate design proposals to complete GSIM V1.0.


Resource Commitment

30 working days of effort 11 June -16 November 2012

Majority of effort will be required after 31 August 2012.



Specification Layer Task Teams



See next page


Proposed Membership


See next page



From 8 June 2012 - 31 August 2012


Milestones & Deliverables


Draft of GSIM Specification layer completed by 31 August 2012


  •           Two hour weekly team meetings
  •           Weekly progress reports to PM
  •           Fortnightly feedback from the GSIM Integration Team on integrated modelling work. 



  •           Create a first complete draft of a particular package of information objects (including relationships and standardised attributes) within the Specification Layer
  •           Build on the detailed but incomplete models delivered by GSIM  Sprint 2
  •           Identify implementation standards (eg SDMX, DDI, BPMN) which are relevant and reuse modelling constructs from existing standards where possible
  •           Be guided by relevant business cases


Resource Commitment

4-5 experts per team (including team leader)

Each business expert:

20 working days between 11 June -31 August 2012;

Team Leader:

Additional 10 working days for the same period













Task Team


Proposed Composition

* Indicates unconfirmed /‘wishlist’ participants

Statistical Program and Acquisition Program


This task team will focus on objects like:

  •           Information Request
  •           Data Resource
  •           Data Provider
  •           Instrument
  •           Program and Product


This group will also consider information objects in Phases 1, 4 and 9 of the GSBPM (Specific Needs, Collect and Evaluate) which are not covered elsewhere.

  1.           Juan Munoz (INEGI)
  2.           Michaela Denk (IMF)
  3.           Franck Cotton (INSEE)
  4.           *Bruce Fraser (ABS)
  5.           ..
  6.           ..


This task team will focus on the objects like :

  •           Process Control
  •           Process Components
  •           Rules

This group will also consider information objects in the GSBPM (Phases 2, 3, 5, 6 and 8) which are not covered elsewhere.

  1. Alistair Hamilton (ABS)
  2. Piero Falorsi (ISTAT)
  3. Johanne Jean-Baptiste (Statistics Canada)
  4. Methodologist from Statistics New Zealand
  5. *Statistics Netherlands representative
  6. *Statistics Sweden representative


This task team will focus on objects like:

  • Populations/ Units
  • Concepts
  • Variables
  • Classifications
  1. Dan Gilllman (BLS)
  2. Helen Toole (ABS)
  3. Tim Dunstan (Statistics Canada)
  4. Klas Blomqvist (Statistics Sweden)
  5. Mogens Grosen Nielson (Statistics Denmark)

Information and Dissemination Program

This task team will focus on Dataset and objects like:

  •           Product/ Service
  •           Dimension
  •           Measure
  •           Logical Record


This group will also consider information objects in Phase 7 of the GSBPM (Disseminate) which are not covered elsewhere.

  1. Jay Devlin/Keith Chung /Chris Seymour as a team (Statistics New Zealand)
  2. John Machin (ABS)
  3. Jenny Linnerud (Statistics Norway)
  4. *Eurostat representative
  5. *Office of National Statistics (UK) representative
  6. ..



Modelling Team



  •           To work with the SLTTs to develop consistent, standards aligned, formal specification,
  •           To support to GIT in the  further evolution of the Specification Layer as part of the GSIM V0.8 specification for review
  •           To advise on the proposed GSIM V1.0 specification.


The MT will provide advice and review outputs from the SLTTs to help improve the design but final decisions on design are made by the business experts (including input from the GIT).


Proposed membership

  1.        Chris Nelson
  2.        Arofan Gregory
  3.        J Gager
  4.        Pascal Hues



Time-limited direction from 8 June 2012 - 31 December 2012


Milestones & Deliverables

First completed draft of the Specification Layer completed by 31 August 2012 for handover to GIT

GSIM V0.8 finalised by 17 September 2012

GSIM V1.0 for 30 November 2012



Weekly progress reports to PM

Fortnightly feedback from the GSIM Integration Team on integrated modelling work.



The Lead Modeller will incorporate the outputs and identify gaps and overlaps from each SLTT into the integrated model for the Specification Layer;


‘In-posted” Modellers will work with the SLTTs to translate the ideas of the business experts into standards aligned, formal modelling specifications.


Resource commitment

Expert consultants are proposed as members of the MT.


Total time requirements:

  •           Lead Modeller - 80 working days                                    
  •           ‘In-posted’ modellers (3) – 42 working days each



User Guide Task Team



Develop GSIM user guide to act as a basis for delivery of training programs and inform various target user groups and; including business experts, methodologists, IT design and development experts; and the broader statistical industry, including vendors.



To be confirmed



30 September 2012 to 16 December 2012



Weekly progress report to PM each week

Feedback on content from the GSIM Integration Team


Milestones & Deliverables

Draft User Guide by 31 November 2012

Final User Guide released with GSIM V1.0 in December 2012.



  •           Consult with business experts and GIT to assess the requirements and content for the GSIM V1.0 User Guide
  •           Produce limited exposure draft for comment and feedback


Resource commitment

Each business expert: 10 working days - 30 Sept - 31 Nov 2012;

Team Leader: Additional 5 working days


Communication Plan Task Team



Development of a communications plan to inform stakeholders about the progress in the development of GSIM and invite input and feedback and position and market GSIM V1.0 to relevant stakeholders



To be confirmed



30 September 2012 to 16 December 2012



Weekly progress report to PM each week

Feedback on content from the GSIM Integration Team


Milestones & Deliverables

  •           Communication Plan for GSIM V0.8 by 17 September
  •           Management of feedback and communication processes associated with GSIM V0.8 through to GSIM V1.0
  •           Communication Plan for GSIM V1.0 by 30 November 2012



  •           Work with DSG, GIT and business experts to develop effective communications, positioning and marketing for V0.8 and V1.0
  •           Develop appropriate branding, marketing collateral and supporting materials to promote GSIM to relevant stakeholders


Resource commitment

Each business expert: 5 working days between 30 Sept-31 Nov 2012

Team Leader: Additional 5 working days

Annex 3: Layer Integration Workshop: 17-21 September 2012




The Specification layer of the Generic Statistical Information Model (GSIM) is being developed by four virtual teams between June and August 2012.  The work of these teams is to be integrated into a consistent and coherent document by the GSIM Integration Team. This team must also update the Overview and Communication layers of GSIM, reflecting feedback received on Version 0.4.


These documents will be released for public comment as part of the next version of GSIM – Version 0.8 – at the end of September.


Workshop objectives


  • Peer review consolidated design proposal for the GSIM Specification layer
  • Review feedback on GSIM V0.4 and complete disposition log
  • Produce V0.8 of GSIM Overview, Communication and Specification layers




Independent facilitator (1 person)

GSIM Integration Team (including GSIM Project Manager)

(max. 13 people)



Monday 17 – Friday 21 September 2012



The Hague (to be confirmed)



  • Review documentation from the work of the four SLTTs
  • Review feedback received on GSIM V0.4



Day 1: (A) Clarifying workshop objectives and program

  (B) Review and agree on addressing overarching feedback              on V0.4

  (C) Production – discuss outputs from SLTT; review feedback

relating to objects in this group; agree on necessary changes; update

documentation (follow same tasks for each group below)


Day 2: (A) Production (continued)

  (B) Statistical Program and Acquisition Program

  (C) Identifying gaps and overlaps – discuss and develop process

  (D) Update specification document / disposition log


Day 3: (A) Conceptual

  (B) Dissemination Program and Information

  (C) Update specification document / disposition log


Day 4: (A) Address overlaps and gaps

  (B) Review Communication layer and agree on changes


Day 5: (A) Finalise Communication layer for V0.8

  (B) Finalise Specification layer for V0.8

  (C) Finalise Overview layer for V0.8