This section contains the following:
| HCOTEG122210 | Introduction |
| HCOTEG122220 | Can we make traders bring markers up or down in strength? |
| HCOTEG122230 | What do we do about oil which has been over-marked? |
| HCOTEG122240 | What do we do about oil which has been under-marked? |
| HCOTEG122250 | Oil which has been ‘imported’ |
