# Group FMIndex Compression Specialisations
Tags that can be chosen to specify if the index stored the text or not.

## Grouped Tags Overview

- `CompressText`
  Tag to select a FM index variant that can be used such that it is not necessary to store the text after index construction. This index is very space efficient.
- `void`
  The text is kept and not cleared. This FM Index version is faster but more memory is required.

## Grouped Tags Detail

### `CompressText`

Tag to select a FM index variant that can be used such that it is not necessary to store the text after index construction. This index is very space efficient.

### `void`

The text is kept and not cleared. This FM Index version is faster but more memory is required.

#### Dox Sources

    /*!
     * @defgroup FMIndexCompressionSpec FMIndex Compression Specialisations
     *
     * @brief Tags that can be chosen to specify if the index stored the text or
     *        not.
     *
     * @tag FMIndexCompressionSpec#CompressText
     *
     * @brief Tag to select a FM index variant that can be used such that it is not
     *        necessary to store the text after index construction. This index is
     *        very space efficient.
     *
     * @tag FMIndexCompressionSpec#void
     *
     * @brief The text is kept and not cleared. This FM Index version is faster but
     *        more memory is required.
     */