---
title: "Legend & explanations"
source: https://dev.pageseeder.com/reference/index/legend_and_explanations.html
last_updated: 2026-08-07T17:09:54+10:00
tokens: ~688
---

# Legend and explanations

Explanations and legends relating to the index documentation.

## Index terminology

The terms used in the index documentation are borrowed from Apache Lucene.

| Term | Abbr. | Meaning |
| --- | --- | --- |
| **Stored** | S | The content of the field is stored in the index and available in search results. |
| **Compressed** | Z | The content of the field is stored in the index using compressed format and might be available in search results. |
| **Analyzed** | A | The content has been tokenized so that individual terms and phrases can be searched. When a field is analyzed; facets for this field are made of individual terms. |
| **Indexed** | I | The content has been indexed as it is; searches can only match the full content (prefix and fuzzy searches are possible also). When a field is simply indexed (as opposed to analyzed), facets values use the entire field value. |
| **Int** | N | The field is interpreted as a numeric field so that it can be stored and sorted efficiently. |
| **Long** | L | The field is interpreted as a numeric field so that it can be stored and sorted efficiently. |

## Cardinality

The cardinality denotes the number instances if the field is supported by the kind of indexable item.

| Term | Abbr. | Meaning |
| --- | --- | --- |
| **1** |  | If the field is supported, it is always available |
| **0..1** | ? | If the field is supported, it might be available |
| **0..N** | \* | If the field is supported, there might be multiple instances |
| **1..N** | + | If the field is supported, there is at least one instance |

## Legend

For brevity, the documents use icons to denote the different kinds of indexable items.

| Icon | Description |
| --- | --- |
| ![folder\_icon.svg](/content/reference/index/../../images/icons/folder_icon.svg) | Folders |
| ![word\_icon.svg](/content/reference/index/../../images/icons/word_icon.svg) | Microsoft Word document |
| ![pdf\_icon.svg](/content/reference/index/../../images/icons/pdf_icon.svg) | *PDF* document |
| ![html\_icon.svg](/content/reference/index/../../images/icons/html_icon.svg) | HTML document |
| ![xml\_icon.svg](/content/reference/index/../../images/icons/xml_icon.svg) | XML document |
| ![psml\_icon.svg](/content/reference/index/../../images/icons/psml_icon.svg) | PageSeeder document (PSML) |
| ![file\_icon.svg](/content/reference/index/../../images/icons/file_icon.svg) | Any other type of document |
| ![image\_icon.svg](/content/reference/index/../../images/icons/image_icon.svg) | Image (`.gif`, `.bmp`, `.png` or `.jpeg`) |
| ![task\_icon.svg](/content/reference/index/../../images/icons/task_icon.svg) | Task |
| ![comment\_icon.svg](/content/reference/index/../../images/icons/comment_icon.svg) | Comment |