# Understanding API Terminology (LIMS v5 and later)

The following table shows how API terminology maps to terminology used in the Clarity LIMS v5.x interface.

<table><thead><tr><th width="180">API Terminology</th><th>Clarity LIMS Terminology</th><th>Notes</th></tr></thead><tbody><tr><td>Analyte</td><td>Derived sample</td><td>Not applicable</td></tr><tr><td>Artifact</td><td>An item that is input to or generated by a step. Derived samples and measurements are both artifacts.</td><td>Not applicable</td></tr><tr><td>Lab</td><td>Account</td><td>Accounts are not fully supported in the Clarity LIMS v5.x web interface. However, lab is supported in the API.</td></tr><tr><td>Process</td><td>Step</td><td>step and process both exist in the API. While related, they are not synonyms and have different uses.</td></tr><tr><td>Process type</td><td>Master step</td><td>Not applicable</td></tr><tr><td>Researcher</td><td>Client or user</td><td>Not applicable</td></tr><tr><td>Resultfile</td><td>Measurement or file / file placeholder</td><td>A file could be a log file that is shared across all samples in the step or a file that belongs to a single sample, such as an Electropherogram.</td></tr><tr><td>Sample</td><td>Submitted sample</td><td>The original sample submitted to the system.</td></tr><tr><td>UDF</td><td>Custom field</td><td>User-defined types (UDTs) are not supported in the Clarity LIMS v5.x web interface. However, udt is supported in the API.</td></tr></tbody></table>

See also the *Terms and Definitions* section.