| superclass | description |
|---|---|
| Intangible | A utility class that serves as the umbrella for a number of 'intangible' things such as quantities, structured values, etc. |
| subclass | description |
|---|---|
| HowToDirection | A direction indicating a single action to do in the instructions for how to achieve a result. |
| HowToItem | An item used as either a tool or supply when performing the instructions for how to achieve a result. |
| HowToSection | A sub-grouping of steps in the instructions for how to achieve a result (e.g. steps for making a pie crust within a pie recipe). |
| HowToStep | A step in the instructions for how to achieve a result. It is an ordered list with HowToDirection and/or HowToTip items. |
| HowToTip | An explanation in the instructions for how to achieve a result. It provides supplementary information about a technique, supply, author's preference, etc. It can explain what could be done, or what should not be done, but doesn't specify what should be done (see HowToDirection). |