To specify the level at which a block element should appear in DITA output, you can assign a level number to any FrameMaker paragraph formats that are mapped to the element (see §14.4.3 ). However, for most nesting issues, you should use settings that specify ancestry rather than level; see §14.5.2 . Assign levels only for the following purposes:
The lower the level number, the higher the level; <topic> is level 0, the root. You cannot put anything else at level 0. The topic title is at level 1. The first heading in the topic body is at level 3 (a title below <topic>, <body>, and <section>).
To override the assigned level of a particular paragraph, place a DITALevel marker in the paragraph. A DITALevel marker specifies the level at which the current block element should appear in the DITA file, overriding whatever is specified for the format in [DITALevels]. The content of a DITALevel marker is a single integer.