Numbering chapters, headings and subheadings is not mandatory, but the heading levels must be clearly distinguished. If you do number the headings, the numbering must be sequential and accurate. Please use bolding or a larger font to ensure they are easy to find. Italics are not as effective, as they do not reproduce as clearly on a screen. Do not use coloured headings.
Capitalization of same-level headings must be consistent. You can use title case or sentence case, but must use the same case for all headings of the same level. This also applies to captions of tables, figures, etc.
Running Heads / Running feet
Running headers are a navigation aid to the reader in large documents. Chapter titles as well as numbers are normally included in a running header in order to give the reader an idea of the chapter content.
It is not necessary to have running heads or running feet in your thesis, other than for page numbers. If you choose to have a running head, it must have only chapter titles (and chapter numbers, if applicable), or chapter subsections. Information other than this is not acceptable in a header or footer. In addition, placement of the running head must conform to the Chicago Manual of Style requirements; i.e. it must not be used on the title page or dedication pages, or on the first pages of sections in the preliminary pages, first pages of chapters, and any pages containing only illustrations or tables. The running head must be placed top centre or top right-justified. See CMoS 17, 1.11 and 1.12. If you are not familiar with correct use of running headers, we recommend you don't use them.